Sightings 2011 Vogelplas Starrevaart, Vlietland and Leidschendammerhout

2011: jan, feb, mar, apr, may, jun, jun, jul, aug, sep, oct, nov, dec, observers

Sightings 2011

red is a rare or scarce species
green is early (first) or late sighting
blue is a high count
blue is a count that exceeds the 1% level

The 1% level is an indicator of the importance of a wetland area. If 1% of the total North-West European population of a bird species is present on a regular basis, the site is of international importance. See also "De 1%-soorten van de Meeslouwerpolder en de Vogelplas Starrevaart" (in Dutch) and Population estimates and 1%-levels for waterbird species occurring in the Netherlands: suggestion for standardisation, P.L. Meininger, H. Schekkerman, en M.W.J. van Roomen, Limosa, 68(2):41, 1995.

December 2011

December 30 - Great Egret 2, Common Goldeneye 3 male 3 female 3 female type, Smew 1 female type, Common Buzzard 1, Eurasian Oystercatcher 5, Eurasian Curlew 400, Lesser Black-backed Gull 1 (cr-ringed).
Meeslouwerplas: Great Cormorant 14, Spotted Redshank 3.
Leidschendammerhout: Great Egret 1, Mute Swan 14, Greater White-fronted Goose 75, Greylag Goose 95, Canada Goose 7, Gadwall 16, Common Teal 10, Northern Pintail 2 male, Eurasian Sparrowhawk 1, Common Buzzard 1, Common Kestrel 1.
Passing: Greater White-fronted Goose 80 SW.
December 27 - Black-necked Grebe 1, Great Cormorant 8, Great Egret 2, Bewick's Swan 4, Common Shelduck 17, Common Teal 93, Common Goldeneye 3 male 2 female 3 female type, Common Kestrel 2, Eurasian Oystercatcher 6, Northern Lapwing 500, Eurasian Curlew 250, Great Black-backed Gull 1, Rose-ringed Parakeet 1, Long-tailed Tit 9.
Meeslouwerplas: Little Grebe 2, Great Cormorant 14, Gadwall 32, Tufted Duck 35, Spotted Redshank 1.
Passing: Greater White-fronted Goose 70 S.
December 26 - Great Egret 1, Grey Heron 2, Northern Goshawk 1 juvenile male, Common Buzzard 2, Common Kestrel 1, Common Snipe 1, Meadow Pipit 1, Water Pipit 4, Common Reed Bunting 1.
Leidschendammerhout: Great Egret 1, Common Buzzard 4, Jack Snipe 6 (record count), Common Snipe 2, Water Pipit 3.
Passing: European Golden Plover 2.
December 21 - Black-necked Grebe 1, Great Cormorant 9, Great Egret 2, Bewick's Swan 16 adult 3 juvenile, Greylag Goose 250, Eurasian Wigeon 3500, Common Teal 98, Common Pochard 25, Common Goldeneye 2 male 1 female 4 female type, Common Buzzard 1, Peregrine Falcon 1, Eurasian Oystercatcher 3, Mediterranean Gull 1 adult winter plumage, Common Kingfisher 1.
Meeslouwerplas: Little Grebe 1, Great Cormorant 7, Spotted Redshank 1.
Leidschendammerhout: Great Egret 1, White Stork 5.
Passing: Greater White-fronted Goose 200, European Golden Plover 400, Eurasian Curlew 50.
December 19 - Little Grebe 1, Great Cormorant 8, Common Shelduck 12, Common Teal 83, Northern Pintail 10 male 4 female, Common Pochard 19, Common Goldeneye 1 male 1 female 2 female type, Eurasian Oystercatcher 3, Lesser Black-backed Gull 1.
Meeslouwerplas: Great Crested Grebe 10, Great Cormorant 9, Gadwall 10, Mallard 80, Northern Goshawk 1 juvenile, Eurasian Coot 40, Long-tailed Tit 5.
Leidschendammerhout: Great Egret 1, White Stork 2, Common Buzzard 3.
Passing: White Stork 1, Common Buzzard 2.
December 18 - Bewick's Swan 14.
Vlietland: Little Grebe 4, Great Cormorant 44, Northern Goshawk 1 female.
Passing: Eurasian Curlew 420.
December 17 - Black-necked Grebe 1, Great Egret 1, Common Shelduck 29, Common Pochard 32, Tufted Duck 198, Common Goldeneye 1 male 1 female 3 female type, Eurasian Sparrowhawk 1 female, Common Buzzard 2, Common Kestrel 1, Eurasian Oystercatcher 4, Ruff 13, Eurasian Curlew 200, Lesser Black-backed Gull 1, Water Pipit 4.
Leidschendammerhout: Great Egret 1, White Stork 2, Gadwall 12, Common Teal 6, Common Buzzard 3.
Passing: Greater White-fronted Goose 450 N, Fieldfare 3.
December 14 - Bewick's Swan 3, Common Shelduck 27, Eurasian Wigeon 3300, Common Teal 52, Northern Pintail 10 male 4 female, Common Pochard 27, Tufted Duck 228, Common Goldeneye 2 male 1 female 3 female type, Smew 1 female, Northern Goshawk 1 juvenile, Eurasian Sparrowhawk 1, Common Buzzard 2, Common Kestrel 1, Eurasian Oystercatcher 2, Northern Lapwing 600, Common Snipe 1, Eurasian Curlew 14, Lesser Black-backed Gull 1, Great Black-backed Gull 1.
Leidschendammerhout: Great Egret 2, White Stork 1, Greylag Goose 70, Canada Goose 11, Common Teal 12, Common Buzzard 1.
December 12 - Great Bittern 1 Kniplaan side, with fish), Great Egret 1, Greylag Goose 250, Common Shelduck 36, Tufted Duck 200, Common Goldeneye 1 male 3 female type, Common Buzzard 1, Common Snipe 3, Lesser Black-backed Gull 1, Great Black-backed Gull 1, Rose-ringed Parakeet 1.
Leidschendammerhout: Great Egret 2, White Stork 2, Gadwall 12, Common Teal 8, Northern Pintail 3 male, Great Spotted Woodpecker 1.
December 11 - Little Grebe 1, Great Cormorant 8, Great Egret 2, Bewick's Swan 11 adult 1 juvenile, Greater White-fronted Goose 880, Greylag Goose 1510, Canada Goose 10, Barnacle Goose 4, Egyptian Goose 10, Common Shelduck 31, Common Teal 46, Northern Pintail 14, Northern Shoveler 190, Common Goldeneye 1 male, Common Buzzard 1, Common Kestrel 1, Pied Avocet 1, Northern Lapwing 500, Ruff 1 male 4 female, Eurasian Curlew 420, Great Black-backed Gull 1, Rose-ringed Parakeet 4, Water Pipit 9 (roost), Grey Wagtail 1.
Leidschendammerhout: Common Buzzard 3, Water Pipit 7.
Vlietland: Little Grebe 2, Great Cormorant 68 (roost), Great Egret 12 (roost), Northern Goshawk 1, Water Pipit 4, Northern Chiffchaff 1.

Great Egrets and Pied Avocet, 11-12-2011 (Photo © Caroline Walta)

December 10 - Little Grebe 1, Great Egret 1, Bewick's Swan 3, Common Goldeneye 1 male 2 female, Eurasian Sparrowhawk 1, Common Buzzard 1, Common Kestrel 1, Pied Avocet 1, Ruff 9, Common Snipe 1.
Meeslouwerplas: Common Teal 6, Spotted Redshank 1.
Leidschendammerhout: Common Buzzard 1, Great Spotted Woodpecker 2, Long-tailed Tit 5, Short-toed Tree Creeper 1.
Passing: Greater White-fronted Goose 400.
December 9 - Little Grebe 1, Common Shelduck 30, Common Goldeneye 1 male 3 female type, Goosander 2 female, Common Buzzard 1, Common Kestrel 1, Eurasian Oystercatcher 1, Spotted Redshank 1.
December 5 - Common Shelduck 33, Common Teal 52, Northern Pintail 7 male, Common Goldeneye 2 male 2 female 2 female type, Common Buzzard 2.
Leidschendammerhout: Great Egret 1, White Stork 22 (at 4:45 PM in the large pool), Canada Goose 10, Egyptian Goose 2, Gadwall 12, Common Teal 18, Northern Pintail 6 male 1 female, Common Buzzard 2.
December 2 - Little Grebe 1, Great Egret 1, Mute Swan 5, Bewick's Swan 4, Canada Goose 17, Common Shelduck 47, Eurasian Wigeon 3400, Common Teal 42, Northern Pintail 18 male 5 female, Common Goldeneye 1 male 1 female 2 female type, Northern Goshawk 1 adult female (at 4:30 PM hunting and resting), Eurasian Oystercatcher 1, Northern Lapwing 600, Common Snipe 2, Eurasian Curlew 170, Great Black-backed Gull 1 3cy.
Leidschendammerhout: Great Egret 1, White Stork 4, Canada Goose 38, Gadwall 45, Common Teal 12.

November 2011

November 30 - Greylag Goose 250, Common Shelduck 36, Common Teal 76, Northern Pintail 13 male 1 female, Red-crested Pochard 2 male 1 female, Common Pochard 19, Tufted Duck 185, Common Goldeneye 3 female type, Common Buzzard 1, Common Snipe 1, Eurasian Curlew 90, Great Black-backed Gull 1.
Leidschendammerhout: White Stork 2, Mute Swan 13, Greater White-fronted Goose 16, Greylag Goose 260, Egyptian Goose 4, Common Buzzard 3, Common Kestrel 1, Stock Dove 2, Long-tailed Tit 2.
November 28 - Great Cormorant 17, Great Egret 2, Greylag Goose 150, Barnacle Goose 2, Common Shelduck 33, Eurasian Wigeon 2200, Common Teal 38, Northern Pintail 11 male, Red-crested Pochard 2 male 1 female, Common Goldeneye 1 male 3 female type, Eurasian Sparrowhawk 2, Common Buzzard 1, Common Snipe 4, Northern Chiffchaff 1.
Leidschendammerhout: Great Egret 1, White Stork 2, Greater White-fronted Goose 70, Greylag Goose 260, Gadwall 32, Common Teal 36, Northern Pintail 2 male, Common Buzzard 2.
Passing: Greater White-fronted Goose 38 S, Barnacle Goose 70 SW, Peregrine Falcon 1 juvenile, Stock Dove 4 SW.
November 26 - Great Egret 1, Common Shelduck 29, Common Teal 57, Northern Pintail 15 male 4 female, Common Goldeneye 3 female type, Eurasian Sparrowhawk 1, Common Snipe 3, Spotted Redshank 2.
Leidschendammerhout: Great Egret 1, White Stork 2, Greater White-fronted Goose 90, Greylag Goose 130, Gadwall 30, Common Teal 34.
November 24 - Northern Pintail 15 male 2 female, Common Goldeneye 3 female type, Northern Goshawk 1 juvenile, Ruff 4, Common Snipe 4.
Leidschendammerhout: White Stork 2, Greater White-fronted Goose 27, Common Shelduck 1, Gadwall 44, Common Teal 75, Northern Pintail 2 male, Northern Shoveler 10, Common Pochard 2, Tufted Duck 3, Common Buzzard 2, Common Kestrel 1.
November 23 - Little Grebe 1, Great Cormorant 16, Great Egret 1, Greater White-fronted Goose 35, Greylag Goose 300, Bar-headed Goose 2, Canada Goose 36, Egyptian Goose 14, Common Shelduck 26, Eurasian Wigeon 3000, Common Teal 47, Northern Pintail 12 male 2 female, Common Goldeneye 3 female type, Northern Goshawk 1 juvenile, Peregrine Falcon 1 (hunting at 4:45 PM), Common Snipe 14, Eurasian Curlew 40, Spotted Redshank 2.
Leidschendammerhout: White Stork 2, Greater White-fronted Goose 120, Greylag Goose 70, Common Shelduck 1, Gadwall 26, Common Teal 5, Northern Pintail 2 male, Common Buzzard 2, Common Kestrel 1.
Passing: Greater White-fronted Goose 45 SW.
November 22 - Great Cormorant 19, Great Egret 2, Grey Heron 3, Common Goldeneye 2, Smew 3 female type, Eurasian Sparrowhawk 2, Common Buzzard 2, Peregrine Falcon 1, Water Rail 1 (Kniplaan side), Common Snipe 13, Eurasian Curlew 5, Spotted Redshank 3, Common Kingfisher 1.
Passing: Greater White-fronted Goose 45 S.
November 20 - Great Crested Grebe 2, Grey Heron 1, Snow Goose 1, Common Goldeneye 1 female type, Common Snipe 5, Spotted Redshank 3.
Leidschendammerhout: White Stork 2, Greater White-fronted Goose 100, Common Buzzard 1, Common Kestrel 1.
November 19 - Great Cormorant 19, Great Egret 1, Greylag Goose 300, Egyptian Goose 10, Common Shelduck 27, Eurasian Wigeon 3100, Common Teal 41, Northern Pintail 13 male 1 female, Common Goldeneye 1 female, Common Snipe 15, Spotted Redshank 2.
November 18 - Great Egret 1, Greater White-fronted Goose 75, Greylag Goose 450, Common Teal 12, Northern Pintail 14 male 1 female, Common Goldeneye 3 female type, Common Snipe 22, Eurasian Curlew 70, Spotted Redshank 3.
Leidschendammerhout: White Stork 2, Greater White-fronted Goose 40, Greylag Goose 110, Common Teal 4, Northern Pintail 2, Common Buzzard 2.
November 16 - Little Grebe 1, Great Cormorant 23, Great Bittern 1 (south-west side), Great Egret 1, Bewick's Swan 11 (arriving at 5:20 PM), Common Shelduck 32, Eurasian Wigeon 2200, Common Teal 57, Northern Pintail 17, Tufted Duck 282, Common Goldeneye 2 male 3 female type, Eurasian Sparrowhawk 1, Common Buzzard 2, Common Kestrel 2, Common Snipe 15, Spotted Redshank 2.
Meeslouwerplas: Common Kingfisher 1.
Leidschendammerhout: Great Egret 1, Greater White-fronted Goose 250, Greylag Goose 120, Gadwall 26, Common Teal 8, Common Buzzard 1, Common Kestrel 2, Song Thrush 1.
Passing: Bewick's Swan 6 adult 1 juvenile S.
November 15 -
Meeslouwerplas: Common Kingfisher 1.
November 14 - Little Grebe 1, Great Cormorant 9, Great Egret 1, Bewick's Swan 5 adult 4 juvenile, Greater White-fronted Goose 14, Greylag Goose 450, Egyptian Goose 7, Common Shelduck 40, Eurasian Wigeon 2100, Common Teal 29, Northern Pintail 13, Tufted Duck 228, Common Goldeneye 1 male 1 female 4 female type, Goosander 1 male, Common Snipe 17, Eurasian Curlew 5, Spotted Redshank 18.
Leidschendammerhout: White Stork 2, Eurasian Sparrowhawk 1, Common Kestrel 1.
November 13 - Ruff 1 male, Common Snipe 3.
November 12 - Great Crested Grebe 12, Great Egret 1, Greylag Goose 400, Common Shelduck 38, Common Teal 41, Northern Pintail 13, Common Goldeneye 1 male 4 female type, Water Rail 1, Common Snipe 16, Eurasian Curlew 160, Spotted Redshank 19, European Herring Gull 400, Cetti's Warbler 1 (at dusk singing and calling, west side).
Leidschendammerhout: Tundra Bean Goose 3, Common Buzzard 1, Common Kestrel 1 male, Water Pipit 4.
Vlietland: Little Grebe 4.
Passing: Great Egret 1, White Wagtail 1, Western Jackdaw 200 W (roosting migration).
November 11 - Great Egret 1, White Stork 1, Common Goldeneye 1 male 5 female type, Common Buzzard 1, Common Kestrel 2, Common Snipe 18, Spotted Redshank 17.
Leidschendammerhout: Mute Swan 4, Tundra Bean Goose 4, Greater White-fronted Goose 137, Greylag Goose 703, Egyptian Goose 8.
November 10 - Great Cormorant 19, Great Egret 1, Canada Goose 19, Common Shelduck 40, Eurasian Wigeon 2200, Common Teal 38, Common Pochard 35, Tufted Duck 216, Common Goldeneye 1 male 3 female type, Common Buzzard 1, Common Snipe 28, Eurasian Curlew 2, Spotted Redshank 20, Common Redshank 1.
Leidschendammerhout: Great Egret 1, White Stork 2, Greylag Goose 110, Gadwall 33, Common Teal 18, Common Buzzard 1, Common Kestrel 1, Long-tailed Tit 4.
Passing: Greater White-fronted Goose 45 E, Barnacle Goose 20 E.
November 9 - Great Egret 1, Greater White-fronted Goose 1830, Barnacle Goose 47, Egyptian Goose 41, Common Shelduck 27, Mallard 430 (hunting?), Northern Pintail 23, Common Buzzard 1, Common Snipe 8, Eurasian Curlew 450, Spotted Redshank 16, Water Pipit 10, Long-tailed Tit 12, Short-toed Tree Creeper 1, Common Starling 4000 (roost in reed bed).
Meeslouwerplas: Water Rail 1.
Leidschendammerhout: Gadwall 48, Common Teal 18, Eurasian Sparrowhawk 2 (hunting on Redwing and Wood Cock), Common Buzzard 4, Eurasian Woodcock 1, Water Pipit 1, Long-tailed Tit 4.
Passing: Eurasian Skylark 4, Common Blackbird 4, Redwing 10, Common Starling 1500 SW, Brambling 1, Eurasian Siskin 1.
November 8 - Peregrine Falcon 1 juvenile (4 PM).

Peregrine Falcon, 8-11-2011 (Photo © The�s van Kleffens)

November 7 - Black-necked Grebe 1, Great Egret 1, Bewick's Swan 2 (arriving at 3:30 PM), Egyptian Goose 6, Common Shelduck 35, Eurasian Wigeon 1800, Common Teal 4, Common Pochard 16, Tufted Duck 196, Common Goldeneye 1 male 3 female type, Common Snipe 17, Eurasian Curlew 14, Spotted Redshank 18.
Leidschendammerhout: Great Egret 1, White Stork 1, Greylag Goose 100, Gadwall 45, Common Teal 24, Common Buzzard 2, Common Kestrel 1, Redwing 13, Common Starling 400.
Passing: Barnacle Goose 150 S, Eurasian Skylark 10 NE.
November 4 - Black-necked Grebe 1, Great Cormorant 10, Great Bittern 1, Great Egret 1, Common Shelduck 27, Eurasian Wigeon 650, Mallard 195, Northern Pintail 23, Northern Shoveler 390, Common Pochard 25, Tufted Duck 111, Common Goldeneye 3 (female type), Eurasian Sparrowhawk 1 female, Common Buzzard 1, Common Kestrel 1, Eurasian Oystercatcher 2, Common Snipe 12, Eurasian Curlew 35, Spotted Redshank 34, Common Kingfisher 1.
Leidschendammerhout: White Stork 2, Gadwall 40, Common Teal 23, Common Buzzard 1, Common Kestrel 1.
Passing: White Stork 1, Tundra Bean Goose 6 SE, Rose-ringed Parakeet 11, Common Starling 3000 W.

October 2011

October 31 - Little Grebe 1, Great Egret 3, Greylag Goose 300, Northern Pintail 17, Common Goldeneye 1, Common Buzzard 2, Common Snipe 7, Spotted Redshank 26.
Leidschendammerhout: Grey Heron 8, White Stork 2, Mute Swan 9, Greater White-fronted Goose 12, Greylag Goose 120, Gadwall 16, Common Teal 23, Northern Shoveler 10, Common Buzzard 2, Common Kestrel 1, Great Spotted Woodpecker 1, Long-tailed Tit 2, Western Jackdaw 40.
Passing: Greater White-fronted Goose 26 S.
October 30 - Great Egret 1, Grey Heron 2, Northern Pintail 19, Common Pochard 20, Common Buzzard 1, Northern Lapwing 300, Common Snipe 15, Spotted Redshank 24, Lesser Black-backed Gull 2.
Leidschendammerhout: Great Egret 1, White Stork 2 (1 cr-ringed), Greater White-fronted Goose 10, Greylag Goose >100, Common Buzzard 1, Common Kestrel 1.
Passing: White Stork 3.
October 29 - Great Egret 1, Greater White-fronted Goose 2600, Canada Goose 120, Lesser Canada Goose 2, Barnacle Goose 131, Egyptian Goose 30, Mallard 205, Northern Pintail 19, Eurasian Curlew 330, Spotted Redshank 26, Water Pipit 13 (roost).
Passing: Western Marsh Harrier 1 female SE, Hen Harrier 2 SW (female type), Stock Dove 9, Common Wood Pigeon 150, Eurasian Skylark 15, White Wagtail 2, Fieldfare 2, Song Thrush 15, Redwing 60, Common Starling 15000, Brambling 1.
October 26 - Great Egret 1, Common Shelduck 14, Eurasian Wigeon 450, Common Teal 14, Northern Shoveler 220, Common Goldeneye 2, Northern Lapwing 300, Common Snipe 7, Spotted Redshank 25.
Meeslouwerplas: Common Kingfisher 1.
Leidschendammerhout: White Stork 1, Mute Swan 9, Greylag Goose 150, Gadwall 24, Common Teal 22, Northern Shoveler 10, Common Buzzard 3, Common Kestrel 1, Northern Wheatear 1.
Passing: Great Egret 1.
October 25 - Little Grebe 1, Great Crested Grebe 19, Great Cormorant 3, Great Egret 1, Greater White-fronted Goose 12, Common Shelduck 13, Common Goldeneye 2, Northern Goshawk 1 juvenile hunting, Eurasian Sparrowhawk 1, Common Buzzard 2, Rough-legged Buzzard 1 juvenile, Common Snipe 2, Spotted Redshank 28.

Rough-legged Buzzard, 25-10-2011 (Photo © Adri de Groot)

October 24 - Little Grebe 1, Great Crested Grebe 8, Great Egret 1, Common Shelduck 21, Eurasian Wigeon 700, Common Teal 12, Northern Pintail 28, Common Goldeneye 3, Common Buzzard 1, Common Snipe 6, Spotted Redshank 28.
Leidschendammerhout: Greylag Goose 220, Common Buzzard 2, Common Kestrel 1, Northern Wheatear 1, Long-tailed Tit 9.
Passing: White Stork 7, Eurasian Sparrowhawk 1.
October 20 - Great Crested Grebe 8, Great Egret 2, Common Shelduck 20, Eurasian Wigeon 550, Common Teal 9, Northern Pintail 29, Common Goldeneye 1, Red-breasted Merganser 1, Common Buzzard 2, Common Kestrel 1, European Golden Plover 1, Northern Lapwing 250, Common Snipe 4, Spotted Redshank 12, Common Kingfisher 1.
Meeslouwerplas: Water Rail 1.
Leidschendammerhout: Grey Heron 9, Gadwall 31, Common Teal 2, Northern Pintail 1, Common Buzzard 1, Common Kestrel 1, Common Moorhen 10, Rose-ringed Parakeet 4, Fieldfare 45, Redwing 20.
Passing: White Stork 1, Barnacle Goose 11.
October 17 - Common Goldeneye 2, Eurasian Sparrowhawk 1, Common Buzzard 1, Spotted Redshank 38.
October 15 - Little Grebe 2, Great Egret 1, Bewick's Swan 1, Spotted Redshank 18.
Leidschendammerhout: Northern Wheatear 1.
Passing: Hen Harrier 1 juvenile, Common Buzzard 5 S.

Bewick's Swan, 15-10-2011 (Photo © The�s van Kleffens)

October 14 - Little Grebe 1, Great Cormorant 41, Great Egret 2, Grey Heron 3, Mute Swan 5, Greylag Goose 290, Common Shelduck 16, Eurasian Wigeon 360, Northern Shoveler 320, Tufted Duck 173, Common Kestrel 1, European Golden Plover 35, Common Snipe 4, Spotted Redshank 34, Eurasian Skylark 5.
Meeslouwerplas: Water Rail 1, Common Kingfisher 1.
Leidschendammerhout: Great Egret 1, Grey Heron 8, White Stork 13, Eurasian Sparrowhawk 1, Water Pipit 1, Great Grey Shrike 1.

Great Grey Shrike, 14-10-2011

October 13 - Little Grebe 1, Great Crested Grebe 8, Great Cormorant 38, Great Egret 3, Eurasian Spoonbill 1, Mute Swan 8, Common Shelduck 18, Northern Pintail 27, Northern Goshawk 1 (hunting at 3 PM), European Golden Plover 24, Eurasian Curlew 125, Spotted Redshank 36, Long-tailed Tit 5.
Leidschendammerhout: Eurasian Sparrowhawk 1, Common Kestrel 1, Meadow Pipit 35.
Passing: White Stork 7.
October 12 - Northern Goshawk 1, Common Snipe 3, Bearded Reedling 1.
October 10 - Great Egret 1, Common Shelduck 16, Northern Pintail 28, Common Pochard 26, Common Goldeneye 2, Common Kestrel 1, Dunlin 1 juvenile, Common Snipe 2, Spotted Redshank 36.
Leidschendammerhout: Common Buzzard 1, Common Kestrel 1.
Passing: Northern Goshawk 1, Common Buzzard 3.
October 8 - Common Snipe 2, Great Spotted Woodpecker 2, Bearded Reedling 3, Eurasian Jay 5.
October 7 - Little Grebe 1, Great Cormorant 12, Great Egret 2, Greylag Goose 420, Common Shelduck 11, Northern Pintail 29, Common Pochard 23, Common Goldeneye 1, Eurasian Sparrowhawk 1, Common Kestrel 1, Spotted Redshank 30, Water Pipit 1.
Leidschendammerhout: Common Buzzard 1, Common Kestrel 1, Common Stonechat 1.
October 5 - Great Egret 1, Grey Heron 5, Eurasian Spoonbill 2, Greater White-fronted Goose 85, Greylag Goose 1700 (23 cr-ringed), Bar-headed Goose 2, Canada Goose 172, Barnacle Goose 110, Egyptian Goose 183, Gadwall 78, Northern Pintail 29, Northern Shoveler 450, Common Goldeneye 1, Common Buzzard 2, Common Kestrel 1, Pied Avocet 4, Common Snipe 1, Eurasian Curlew 400, Spotted Redshank 29, Lesser Black-backed Gull 26, Great Black-backed Gull 1, Bearded Reedling 3, Common Starling 1100.
Leidschendammerhout: White Stork 2, Greater White-fronted Goose 10, Greylag Goose 265 (12 cr-ringed), Canada Goose 50, Common Buzzard 2, Common Kestrel 1, Common Snipe 1, Meadow Pipit 4, Grey Wagtail 1, Whinchat 2, Common Stonechat 2 male.
Passing: Meadow Pipit 3, Song Thrush 3, Western Jackdaw 340 NE.
October 4 - Little Grebe 1, Great Cormorant 12, Great Bittern 1, Great Egret 1, Eurasian Spoonbill 1, Common Shelduck 5, Eurasian Curlew 10, Spotted Redshank 26, Common Kingfisher 1, Bearded Reedling 3.
October 3 - Black-necked Grebe 1, Great Cormorant 25, Great Egret 1, Eurasian Wigeon 700, Common Goldeneye 1, Red-breasted Merganser 6 (female type), European Golden Plover 3, Spotted Redshank 26, European Herring Gull 1 with Russian color ring, Eurasian Penduline Tit 2 (very active at west side, opposite of hide).
Leidschendammerhout: Common Kestrel 1, Whinchat 1, Common Stonechat 1, Northern Wheatear 1.

September 2011

September 30 - Great Cormorant 50, Great Egret 1, Greater White-fronted Goose 15, Greylag Goose 1200, Canada Goose 7, Egyptian Goose 8, Common Shelduck 2, Common Goldeneye 1, Northern Goshawk 1 female, Common Buzzard 1, European Golden Plover 40, Northern Lapwing 800, Eurasian Curlew 20, Spotted Redshank 31.
Meeslouwerplas: Mute Swan 21, Cetti's Warbler 1.
Leidschendammerhout: Whinchat 3, Common Stonechat 3, European Goldfinch 1.
September 29 - Great Cormorant 38, Great Egret 3, Grey Heron 7 (on shell island), Eurasian Spoonbill 3, Eurasian Wigeon 150, Common Goldeneye 1, European Golden Plover 1, Northern Lapwing 200, Spotted Redshank 25. Geese hunt with decoys in Leidschendammerhout, AID is contacted if this is legal.

Greyleg Goose that was attracted by decoys has been shot and removed, 29-9-2011

September 28 - Black-necked Grebe 1, Great Cormorant 41, Great Egret 1, Eurasian Spoonbill 1, Common Shelduck 2, Northern Pintail 26, Common Goldeneye 1, Common Buzzard 1, European Golden Plover 140, Northern Lapwing 550, Eurasian Curlew 110, Spotted Redshank 25.
Leidschendammerhout: Greylag Goose 300, Whinchat 2, Common Stonechat 3, European Goldfinch 2.
September 26 - Black-necked Grebe 1, Great Cormorant 24, Great Egret 1, Eurasian Spoonbill 5, Common Shelduck 1, Eurasian Wigeon 300, Northern Pintail 22, Garganey 1, Common Goldeneye 1, Northern Lapwing 600, Common Snipe 1, Eurasian Curlew 8, Spotted Redshank 27, Common Kingfisher 1 (near the hide).
Meeslouwerplas: Cetti's Warbler 1 (singing at west end of Kniplaan).
Leidschendammerhout: White Stork 3, Northern Shoveler 37, Common Buzzard 1, Common Kestrel 1.
Passing: Eurasian Spoonbill 44 S.
September 25 - Black-necked Grebe 1, Great Egret 1, Eurasian Spoonbill 5, Eurasian Wigeon 200, Common Buzzard 1, European Golden Plover 150, Spotted Redshank 14, Bearded Reedling 3.
Passing: White Stork 2 N, Eurasian Spoonbill 21 S (12:30 PM), Meadow Pipit 12.
September 24 - Eurasian Sparrowhawk 1, Common Buzzard 1, European Golden Plover 80, Bearded Reedling 1, Short-toed Tree Creeper 1, Eurasian Jay 2, European Greenfinch 2, Least Weasel 1 (found dead).

Least Weasel , 24-9-2011 (Photo © Kees Dijkstra)

September 23 - Great Cormorant 45, Great Egret 2, Eurasian Spoonbill 2, Greylag Goose 240, Barnacle Goose 86, Eurasian Wigeon 18, Garganey 2, Common Pochard 41, Common Goldeneye 2, Eurasian Sparrowhawk 1, Common Buzzard 2, European Golden Plover >300, Northern Lapwing 300, Common Snipe 1, Eurasian Curlew 470, Spotted Redshank 18, Caspian Tern 1 adult, Cetti's Warbler 1 (near Kniplaan).
Meeslouwerplas: Water Rail 1.
Leidschendammerhout: Greylag Goose 70, Common Buzzard 3, Whinchat 2, Common Stonechat 1.
Passing: Eurasian Spoonbill 20 SW, European Golden Plover 300.

Caspian Tern, 23-9-2011 (Photo © Adri de Groot)

September 21 - Great Cormorant 13, Great Bittern 1 (NE corner), Great Egret 1, Eurasian Spoonbill 6 + 2 juvenile, Canada Goose 31, Northern Pintail 28, Common Pochard 31, Common Goldeneye 1, Eurasian Sparrowhawk 1, Common Buzzard 4, Common Kestrel 2, Eurasian Hobby 1, Ruff 8, Eurasian Curlew 250, Spotted Redshank 26, Lesser Black-backed Gull 15, Common Kingfisher 1 (passing hide), Northern Wheatear 1, Bearded Reedling 2.
Leidschendammerhout: Greylag Goose 250, Bar-headed Goose 2, Canada Goose 45, Egyptian Goose 2, Gadwall 14, Common Teal 1, Northern Shoveler 20, Common Buzzard 3, Whinchat 2, Common Stonechat 3, Northern Wheatear 1.
Passing: White Stork 1, Western Marsh Harrier 1 female SW, European Golden Plover 450, Stock Dove 3.
September 19 - Great Cormorant 23, Great Bittern 1, Great Egret 1, Mute Swan 8, Northern Pintail 23, Garganey 1, Common Buzzard 3, Common Kestrel 1, European Golden Plover 145, Ruff 1, Eurasian Curlew 150, Spotted Redshank 28, Barn Swallow 4, Northern Chiffchaff 1.
Meeslouwerplas: Common Kingfisher 2.
September 18 - Eurasian Spoonbill 7 + 1 juvenile, Gadwall 5, Common Teal 10, Northern Pintail 24, Northern Shoveler 248, Eurasian Sparrowhawk 1, Common Buzzard 4, Common Kestrel 4, Water Rail 1, Spotted Redshank 14, Mediterranean Gull 1 1cy, Common Tern 1 juvenile, Eurasian Green Woodpecker 1, Great Spotted Woodpecker 2, Common Redstart 1 (in allotment garden), European Reed Warbler 1.
Passing: White Stork 9.
September 17 - Northern Pintail 31, Greater Scaup 1 juvenile, Common Buzzard 2, Common Kestrel 1, Common Snipe 1, Spotted Redshank 16, Great Spotted Woodpecker 1.
September 15 - Little Grebe 1, Black-necked Grebe 1, Great Cormorant 34, Eurasian Spoonbill 58 (9 ringed), Mute Swan 14, Bar-headed Goose 1, Barnacle Goose 1, Egyptian Goose 11, Common Shelduck 3, Eurasian Wigeon 80, Northern Pintail 21, Common Kestrel 2, European Golden Plover 65, Northern Lapwing >200, Common Snipe 4, Black-tailed Godwit 1, Bar-tailed Godwit 3, Whimbrel 1, Eurasian Curlew 480, Spotted Redshank 13, Common Sandpiper 1, Barn Swallow 30, Common House Martin 15, Northern Chiffchaff 4, Bearded Reedling 1, Long-tailed Tit 1, Eurasian Penduline Tit 1 (landing in south west corner).
Meeslouwerplas: Gadwall 140, Eurasian Sparrowhawk 1 female hunting, Cetti's Warbler 1 (singing behind the benches along the Kniplaan), Blackcap 1.
Leidschendammerhout: White Stork 2, Common Buzzard 2, Common Kestrel 1, Whinchat 2, Common Stonechat 2.
Passing: White Stork 4 S, Northern Goshawk 1, Eurasian Sparrowhawk 2, Common Buzzard 7, Peregrine Falcon 1 hunting, European Golden Plover >500, Northern Lapwing >700.

Spoonbills from the Waddensea leave after a short stop, 15-9-2011

September 13 - Eurasian Hobby 1, Eurasian Curlew 200.
Leidschendammerhout: Eurasian Sparrowhawk 1, Common Buzzard 3, Common Kestrel 1, Peregrine Falcon 2 hunting, Whinchat 3, Common Stonechat 1.
September 12 - Little Grebe 2, Great Crested Grebe 9, Great Cormorant 11, Northern Pintail 10, Garganey 1, Northern Shoveler 255, Eurasian Curlew 1, Spotted Redshank 7, Common Sandpiper 1. Young Herring Gull saved after leg got stuck on a pole.
Leidschendammerhout: Common Buzzard 3.
September 10 - Black-necked Grebe 1, Eurasian Spoonbill 19 (1 cr-ringed), Northern Pintail 12, Common Buzzard 5, Water Rail 1, Common Snipe 1, Spotted Redshank 16, Common Kingfisher 1, Great Spotted Woodpecker 5, Northern Chiffchaff 2, Bearded Reedling 1, Long-tailed Tit 8, Eurasian Jay 3, European Greenfinch 1. (During volenteering).
September 9 - Little Grebe 2, Black-necked Grebe 1, Great Egret 1, Eurasian Spoonbill 22, Eurasian Wigeon 22, Northern Pintail 8, Common Buzzard 1, Common Kestrel 1, Eurasian Curlew 260, Spotted Redshank 10, Mediterranean Gull 1 1cy.
Leidschendammerhout: Common Buzzard 2, Whinchat 4, Common Stonechat 3.
September 8 - Little Grebe 5, Great Crested Grebe 8, Black-necked Grebe 1, Great Cormorant 6, Mute Swan 11, Egyptian Goose 6, Common Teal 19, Northern Pintail 9, Northern Shoveler 160, Common Pochard 87, Common Kestrel 2, Black Tern 2, Barn Swallow 150, Common House Martin >110, Northern Chiffchaff 2, European Greenfinch 5, European Goldfinch 10.
Leidschendammerhout: Common Buzzard 3, Whinchat 5, Common Stonechat 2 male.
September 7 - Northern Wheatear 1.
September 5 - Little Grebe 9, Black-necked Grebe 1, Great Cormorant 16, Mute Swan 21, Eurasian Wigeon 16, Common Teal 24, Northern Pintail 6, Garganey 2, Common Pochard 54, Eurasian Sparrowhawk 1, Common Buzzard 1, Ruff 1, Eurasian Curlew 65, Spotted Redshank 10, Barn Swallow 40.
Leidschendammerhout: Canada Goose 44, Common Buzzard 3, Common Kestrel 1, Whinchat 2.
Passing: White Stork 1 N.
September 4 - Great Egret 2, Mute Swan 25, Eurasian Wigeon 1, Northern Pintail 3, Ruff 1, Spotted Redshank 6, Barn Swallow 2, European Greenfinch 5, European Goldfinch 4.
Passing: Eurasian Sparrowhawk 1 male S.
September 3 - Great Egret 2, Eurasian Spoonbill 2, Greylag Goose 700, Eurasian Sparrowhawk 1, Common Buzzard 1, European Golden Plover 300, Eurasian Curlew 150, Spotted Redshank 5, Common Greenshank 1, Eurasian Green Woodpecker 1, Great Spotted Woodpecker 1, Spotted Flycatcher 1.
Leidschendammerhout: Greylag Goose 350, Canada Goose 50, Northern Lapwing 25.
Passing: European Golden Plover 50.
September 2 - Little Grebe 1, Great Cormorant 49, Great Egret 1, Eurasian Spoonbill 16, Eurasian Wigeon 10, Gadwall 474, Common Teal 32, Northern Pintail 5, Garganey 2, Northern Shoveler 125, Ruff 2, Spotted Redshank 10, Common Sandpiper 4, Black Tern 1, Great Spotted Woodpecker 1, Barn Swallow 100, Short-toed Tree Creeper 1, Common Starling 500.
Meeslouwerplas: Common Kingfisher 2.
Leidschendammerhout: Bar-headed Goose 1, Canada Goose 52, Western Marsh Harrier 1 juvenile, Common Buzzard 1, Whinchat 14 (mainly north of golf course), Northern Wheatear 2, European Goldfinch 1, Common Reed Bunting 3.
Passing: White Stork 2, Black Tern 7 SW (group at 2:30 PM).

Whinchat, 2-9-2011 (Photo © Caroline Walta)

September 1 - Little Grebe 1, Great Cormorant 34, Great Egret 2, Eurasian Spoonbill 7, Mute Swan 29, Eurasian Wigeon 15, Common Teal 29, Northern Pintail 3, Common Pochard 44, Common Buzzard 1, European Golden Plover 450, Ruff 8, Eurasian Curlew 280, Spotted Redshank 5, Barn Swallow 30.
Meeslouwerplas: Great Crested Grebe 22, Water Rail 1, Eurasian Coot 195, Common Kingfisher 1.
Leidschendammerhout: Canada Goose 40, Common Buzzard 1.
Vlietland: Mute Swan 14, Barn Swallow 80, Eurasian Bullfinch 1.
Passing: Great Egret 2 NE, Eurasian Spoonbill 1 S, Western Marsh Harrier 1 S, Common Buzzard 6, Common Kestrel 2 S, European Golden Plover 75 NE.

August 2011

August 31 - Great Egret 2, Spotted Redshank 12, Common Sandpiper 1, Barn Swallow 25.
Meeslouwerplas: Osprey 1 (flying past at 2 PM).
August 30 - Great Egret 2, White Stork 6, Eurasian Spoonbill 8, Eurasian Hobby 1, Eurasian Oystercatcher 5, Ruff 10, Whimbrel 1, Eurasian Curlew >200, Spotted Redshank 12, Red-necked Phalarope 1 (12:00 PM, swiftly going south), Black Tern 2, Common Swift 3, Barn Swallow >200, Common House Martin 35.
Vlietland: Osprey 1 (hunting at 3:30 PM).
Passing: White Stork 9 W.
August 29 - Little Grebe 2, Black-necked Grebe 1, Great Cormorant 23, Eurasian Spoonbill 13, Mute Swan 26, Eurasian Wigeon 9, Gadwall 249, Garganey 7, Northern Shoveler 205, Common Pochard 45, Northern Goshawk 1, Eurasian Oystercatcher 6, Ruff 3, Whimbrel 1, Eurasian Curlew 250, Spotted Redshank 12, Black Tern 3 juvenile, Common Starling 600, Black Swan 1.
Meeslouwerplas: Eurasian Hobby 1.
Leidschendammerhout: White Stork 11, Common Buzzard 2, European Goldfinch 25.
Passing: White Stork 1, Osprey 1 (at 2 PM southwards).
August 28 - Black-necked Grebe 1, Eurasian Spoonbill 4, Mute Swan 23, Barnacle Goose 50, Egyptian Goose 30, Common Shelduck 8, Eurasian Wigeon 3, Gadwall 53, Common Teal 12, Northern Pintail 3, Garganey 6, Northern Shoveler 235, Common Buzzard 1, Ruff 3, Eurasian Curlew 260, Spotted Redshank 10, Common Sandpiper 1, Red-necked Phalarope 1 juvenile (shortly present in the afternoon), Black Tern 2 juvenile, Barn Swallow 500, Common House Martin 50, European Reed Warbler 1, Black Swan 1.
Passing: Bar-headed Goose 1, Western Marsh Harrier 1 SW, Stock Dove 4.
August 25 - Great Egret 1, Eurasian Spoonbill 22, Greylag Goose 1500, Bar-headed Goose 1, Barnacle Goose 311, Egyptian Goose 93, Eurasian Wigeon 6, Northern Pintail 3, Garganey 2, Western Marsh Harrier 1 male, Northern Goshawk 1, Common Buzzard 2, European Golden Plover 750, Ruff 6, Black-tailed Godwit 1, Eurasian Curlew 170, Spotted Redshank 15, Common Greenshank 2, Green Sandpiper 1, Common Sandpiper 2, Common Tern 2.
Leidschendammerhout: White Stork 6, Common Buzzard 2, Whinchat 1.
Passing: White Stork 1 W, Eurasian Sparrowhawk 1 E, Blue-headed Wagtail 1.
August 24 - Little Grebe 1, Black-necked Grebe 1 adult summer plumage, Great Cormorant 23, Great Egret 1, Eurasian Spoonbill 18, Mute Swan 22, Bar-headed Goose 1, Canada Goose 24, Eurasian Wigeon 2, Gadwall 437, Common Teal 43, Northern Pintail 3, Garganey 15, Northern Shoveler 352, Common Pochard 35, Eurasian Hobby 1, Eurasian Coot 830, Ruff 1, Black-tailed Godwit 1, Eurasian Curlew 270, Spotted Redshank 12, Lesser Black-backed Gull 170, Common Kingfisher 1, Barn Swallow 1200 (roost), Cetti's Warbler 1 (at 9 AM singing near hide), Common Starling 400 (roost), European Goldfinch 5.
Meeslouwerplas: Common Kingfisher 1.
Leidschendammerhout: White Stork 9, Greylag Goose 150, Bar-headed Goose 3, Canada Goose 37.
Passing: Common Greenshank 1.
August 23 - Eurasian Spoonbill 28, European Golden Plover 120, Ruff 4, Cetti's Warbler 1 singing.
August 22 - Great Cormorant 33, Great Egret 1, Grey Heron 3, Eurasian Spoonbill 18, Mute Swan 26, Garganey 2, Water Rail 1, European Golden Plover 80, Ruff 2, Eurasian Curlew 85, Spotted Redshank 8, Common Greenshank 4, Common Tern 1, Cetti's Warbler 1 (near hide), Common Whitethroat 1, Northern Chiffchaff 3, European Greenfinch 2, European Goldfinch 12, Common Linnet 9.
August 21 - Great Egret 1, Grey Heron 3, Eurasian Spoonbill 7, Eurasian Hobby 1 hunting.
Leidschendammerhout: Common Buzzard 1 juvenile.
August 20 - Greater White-fronted Goose 5, Greylag Goose 1400, Bar-headed Goose 4, Snow Goose 1, Canada Goose 450, Barnacle Goose 292, Egyptian Goose 71, Pied Avocet 1, Eurasian Curlew 190, Cetti's Warbler 1 male (in the morning singing midway between Kniplaan and hide).
Meeslouwerplas: Common Kingfisher 1, European Greenfinch 8.
Passing: Blue-headed Wagtail 2 SW, White Wagtail 1 SW.
August 18 - Great Cormorant 24, Great Egret 1, Eurasian Spoonbill 23, Mute Swan 40, Barnacle Goose 4, Common Kestrel 1, Pheasant 6, Black-tailed Godwit 1, Whimbrel 2, Eurasian Curlew >200, Spotted Redshank 10, Common Redshank 2, Common Sandpiper 2, Sand Martin 1, Barn Swallow >100, Common House Martin >20, European Greenfinch 25, European Goldfinch 14.
Meeslouwerplas: Common Swift 2, Common Kingfisher 2.
Leidschendammerhout: White Stork 12, Common Kestrel 1, Common Whitethroat 1, European Goldfinch 30.
Passing: White Stork 2 NW.
August 17 - Great Cormorant 46, Great Egret 1, Eurasian Spoonbill 23, Greater White-fronted Goose 9, Bar-headed Goose 2, Canada Goose 36, Barnacle Goose 60, Egyptian Goose 30, Common Shelduck 5 juvenile, Northern Pintail 2, Garganey 14, Common Goldeneye 1, Western Marsh Harrier 1 male 1 female, Eurasian Hobby 1 (hunting Barn Swallows), European Golden Plover 170, Black-tailed Godwit 10, Whimbrel 1, Eurasian Curlew 390, Spotted Redshank 8, Common Greenshank 3, Black-headed Gull 3500, Common Tern 6, Barn Swallow 1500 (roost), Cetti's Warbler 1 male (singing near the hide in the morning), Common Starling 50 (roost). Today record count of 46 cr-ring readings.
Passing: Great Egret 3 NE, Grey Heron 3 SW, White Stork 1, Whimbrel 1 SW.
August 15 - Great Cormorant 56, Great Egret 1, Eurasian Spoonbill 33, Mute Swan 29, Barnacle Goose 12, Egyptian Goose 19, Gadwall 437, Common Teal 32, Mallard 165, Garganey 6, Northern Shoveler 140, Common Goldeneye 1 (female type), Western Marsh Harrier 1 male, European Golden Plover 2, Northern Lapwing 150, Ruff 3, Black-tailed Godwit 12, Whimbrel 1, Eurasian Curlew 400, Spotted Redshank 10, Common Tern 1, Barn Swallow 800 (roost).
Meeslouwerplas: Tawny Owl 1 (calling at 3 AM), Common Kingfisher 1.
Leidschendammerhout: White Stork 5.
Passing: White Stork 7 W (1 group).
August 14 - Greater White-fronted Goose 5, Northern Goshawk 1.
Passing: Purple Heron 3 SW.
August 14 - Great Egret 1, Eurasian Spoonbill 8, Greylag Goose 150, Snow Goose 1 (blue morph), Barnacle Goose 1, Eurasian Wigeon 1 male, Eurasian Sparrowhawk 2, Common Buzzard 5, Common Kestrel 2, Eurasian Hobby 2 (hunting on House Martin together), European Golden Plover 16, Ruff 2, Whimbrel 5, Eurasian Curlew 225, Spotted Redshank 8 + 1 juvenile, Common Greenshank 1, Common Sandpiper 1, Common Tern 10, Common Swift 8, Barn Swallow 30, Common House Martin 80, European Greenfinch 3, European Goldfinch 2.
Passing: White Stork 12 (local group), European Honey-buzzard 1 (adult female SW at 3:40 PM), Eurasian Hobby 1 SW, Lesser Black-backed Gull 150 SW (single birds, sometimes very high).
August 13 - Great Cormorant 20, Great Egret 1, Eurasian Spoonbill 10, Eurasian Wigeon 1 male 2 female, Garganey 7, Western Marsh Harrier 1 female 2 juvenile, Eurasian Hobby 1, Eurasian Curlew 70, Spotted Redshank 8 adult 1 juvenile, Common Greenshank 1, Common Sandpiper 9, Common Swift 20, Great Spotted Woodpecker 1, Barn Swallow 100, Common House Martin 50, Blackcap 2.
Passing: Eurasian Hobby 1, Ruff 1 male 3 female, Common Greenshank 1, Common Tern 7, Blue-headed Wagtail 1.
August 11 - Great Egret 1, Eurasian Spoonbill 14, Eurasian Hobby 1 (unsuccesfully hunting swallows), Spotted Redshank 2, Common Sandpiper 1, Common Tern 4, Common Swift 4, Barn Swallow >40, Common House Martin >100.
August 8 - Great Cormorant 18, Great Egret 1, Eurasian Spoonbill 9, Mute Swan 38, Barnacle Goose 7, Common Teal 5, Garganey 5, Eurasian Oystercatcher 19, Ruff 3, Black-tailed Godwit 47, Eurasian Curlew 83, Spotted Redshank 8, Common Sandpiper 1, Common Tern 4, Common Swift >10, Sand Martin 2, Barn Swallow >50, Common House Martin >10.
Meeslouwerplas: Common Kingfisher 1 (pond behind parking lot).
August 6 - Little Grebe 1, Great Crested Grebe 14, Black-necked Grebe 2 (1 adult summer plumage, 1 immature), Great Cormorant 29, Great Egret 1, Eurasian Spoonbill 18, Greater White-fronted Goose 1, Canada Goose 80, Barnacle Goose 31, Egyptian Goose 20, Gadwall 270, Common Teal 22, Garganey 6, Northern Shoveler 200, Western Marsh Harrier 1 male 1 female, European Golden Plover 2, Ruff 3, Black-tailed Godwit 15, Eurasian Curlew 160, Spotted Redshank 9, Common Greenshank 4, Green Sandpiper 3, Common Sandpiper 5, Black Tern 1, Common Swift 30, Common House Martin 10, Sedge Warbler 8, European Reed Warbler 7, Common Whitethroat 2, Northern Chiffchaff 25, Willow Warbler 3, Common Reed Bunting 15.
Meeslouwerplas: Great Crested Grebe 38, Eurasian Sparrowhawk 1 (arriving with prey), Eurasian Coot 120.
Leidschendammerhout: White Stork 9.
Passing: White Stork 1, European Golden Plover 60.
August 5 - Great Crested Grebe 9, Great Cormorant 14, Great Egret 1, Grey Heron 6, Eurasian Spoonbill 7, Mute Swan 38, Greylag Goose 400, Canada Goose 12, Egyptian Goose 7, Common Shelduck 6, Gadwall >60, Common Teal 35, Mallard >50, Garganey 4, Northern Shoveler >60, Common Kestrel 1, Eurasian Coot >100, Eurasian Oystercatcher 25, Northern Lapwing 200, Common Snipe 1, Black-tailed Godwit >40, Eurasian Curlew 120, Spotted Redshank 8, Common Redshank 1, Common Sandpiper 1, Lesser Black-backed Gull 20, Common Tern 22, Barn Swallow 20, Common House Martin 12, Meadow Pipit 1, Willow Warbler 2, Bearded Reedling 1 (NE-side), European Greenfinch 1, Common Linnet 1, Common Reed Bunting 3.
August 4 - Great Cormorant 51, Great Egret 1, Eurasian Spoonbill 5, Mute Swan 40, Greater White-fronted Goose 8, Greylag Goose 350, Bar-headed Goose 2, Barnacle Goose 43, Common Teal 18, Garganey 3, Western Marsh Harrier 1 female, Eurasian Coot 445, Eurasian Oystercatcher 42, European Golden Plover 6, Ruff 4, Black-tailed Godwit >50, Eurasian Curlew >170, Spotted Redshank 9, Common Greenshank 2, Common Sandpiper 2, Great Black-backed Gull 3, Common Tern 12.
Meeslouwerplas: Common Kingfisher 1.
Leidschendammerhout: White Stork 4, Common Buzzard 1.
Passing: Western Marsh Harrier 1 S.
August 2 - Peregrine Falcon 1 juvenile.
August 1 - Great Cormorant 75, Great Egret 2, Grey Heron 2, Eurasian Spoonbill 25, Mute Swan 32, Greylag Goose 750 (21 cr-ringed), Canada Goose 194 (11 cr-ringed), Egyptian Goose 15, Common Teal 3, Garganey 3, Western Marsh Harrier 1 juvenile, Eurasian Oystercatcher 80, Whimbrel 1, Eurasian Curlew 40, Spotted Redshank 9, Common Sandpiper 2, Lesser Black-backed Gull 78, Common Tern 40.
Leidschendammerhout: White Stork 2, Common Buzzard 1 juvenile.
Passing: Common Cuckoo 1 juvenile S.

Juvenile Cuckoo, 1-8-2011 (Photo © Adri de Groot)

July 2011

July 29 - Black-necked Grebe 1, Great Cormorant 35, Great Egret 1, Eurasian Spoonbill 31, Mute Swan 35, Greylag Goose 950, Eurasian Wigeon 1, Garganey 1, Western Marsh Harrier 2 juvenile, Eurasian Coot 301, Eurasian Oystercatcher 34, Ruff 1, Black-tailed Godwit >50, Eurasian Curlew >200, Spotted Redshank 7, Common Greenshank 1, Green Sandpiper 1, Common Sandpiper 2, Red-necked Phalarope 1 (seen until 12:25 PM), Common Tern 6, Common Swift 40, Barn Swallow 50, Common House Martin 25.
Leidschendammerhout: White Stork 7, Common Buzzard 3, Common Kestrel 1, European Goldfinch 35.
Passing: White Stork 1, Eurasian Sparrowhawk 1, Peregrine Falcon 1.

Red-necked Phalarope, 29-7-2011

July 28 - Black-necked Grebe 2, Eurasian Spoonbill 19, Eurasian Wigeon 1, Western Marsh Harrier 1 juvenile, Eurasian Oystercatcher 29, Ruff 2, Eurasian Curlew 85, Spotted Redshank 1, Northern Chiffchaff 1, Willow Warbler 1.
July 27 - Great Cormorant 44, Eurasian Spoonbill 28, Mute Swan 30, Greylag Goose 360, Bar-headed Goose 1, Canada Goose 50, Lesser Canada Goose 3, Egyptian Goose 8, Western Marsh Harrier 1 male 1 female, Common Kestrel 1, Eurasian Coot 280, Eurasian Oystercatcher 130, Black-tailed Godwit 6, Green Sandpiper 2, Black-headed Gull 1500, Common Gull 40, Lesser Black-backed Gull 73, Common Tern 75, Barn Swallow 180.
Meeslouwerplas: Tawny Owl 1 calling.
Passing: Eurasian Spoonbill 9 SW, Eurasian Curlew 1, Stock Dove 7.
July 26 - Black-necked Grebe 3, Great Cormorant 23, Grey Heron 1, Eurasian Spoonbill 11, Mute Swan 31, Common Shelduck 27, Eurasian Wigeon 2 male, Gadwall 130, Northern Shoveler 28, Common Pochard 16, Tufted Duck 42, Western Marsh Harrier 3 juvenile, Common Buzzard 1, Eurasian Coot 154, Eurasian Oystercatcher 90, Ruff 10, Black-tailed Godwit 176, Spotted Redshank 6, Common Sandpiper 2, Common Tern 8, Common Swift >25, Great Spotted Woodpecker 1, Sand Martin 20, Barn Swallow 18, Common House Martin >15, Song Thrush 1, European Reed Warbler 2, Blackcap 1, Northern Chiffchaff 1, European Greenfinch 20, European Goldfinch 6, Common Reed Bunting 5.
Meeslouwerplas: Common Buzzard 2 juvenile, Water Rail 1.

Three young Marsh Harriers fledged, despite presence of a Fox on the same location, 26-7-2011 (Photo © Luuk Punt)

July 25 - Black-necked Grebe 1, Great Cormorant 52, Great Egret 1, Eurasian Spoonbill 21, Mute Swan 27, Egyptian Goose 2, Western Marsh Harrier 1 male 1 female 3 juvenile (transfer of prey in flight), Common Kestrel 1, Eurasian Oystercatcher 14, Ruff 6, Black-tailed Godwit >60, Whimbrel 2, Eurasian Curlew >160, Spotted Redshank 9, Common Gull 1, Common Tern 14, Common Swift >50, Barn Swallow 2, Common House Martin 2, European Greenfinch 2.
Meeslouwerplas: Common Buzzard 2 juvenile (begging call), Water Rail 1, Rose-ringed Parakeet 1, Willow Warbler 2.
Leidschendammerhout: White Stork 4, Common Buzzard 1.
Passing: Eurasian Hobby 1 S.
July 24 - Eurasian Spoonbill 30, Canada Goose 30 (12 cr-ringed, 5 read), Eurasian Wigeon 1 male, Eurasian Sparrowhawk 1, Pontic Gull 1 adult, Common Kingfisher 1, Eurasian Green Woodpecker 1.
Passing: Grey Heron 4.
July 23 - Great Egret 2, Eurasian Spoonbill 33, Mute Swan 31, Eurasian Wigeon 1 male, Common Buzzard 2, Pied Avocet 10, Ruff 2, Black-tailed Godwit 100, Eurasian Curlew 90, Spotted Redshank 1, Common Tern 14, Common Swift >500, Sand Martin 10, Common House Martin >50.
July 19 - Great Cormorant 37, Eurasian Spoonbill 23, Common Pochard 1 female 2 pulli, Common Buzzard 1, Common Kestrel 2, Eurasian Oystercatcher 17, Ruff 9, Black-tailed Godwit 35, Eurasian Curlew 145, Spotted Redshank 8, Common Sandpiper 2, Common Swift 34, Common Kingfisher 1 (near hide), Common House Martin 4, Common Whitethroat 3.
July 17 - Eurasian Spoonbill 42, Mute Swan 26, Greater White-fronted Goose 1, Eurasian Wigeon 2 male, Garganey 1, Common Buzzard 1, Pied Avocet 40, Ruff 1, Black-tailed Godwit 170, Eurasian Curlew 60, Spotted Redshank 6, Common Sandpiper 3, Common Tern 92, Common Swift >200, Barn Swallow 450, Blackcap 1, Willow Warbler 1, European Greenfinch 4, European Goldfinch 2.
July 15 - Great Cormorant 95, Eurasian Spoonbill 35, Greater White-fronted Goose 1, Greylag Goose 960, Egyptian Goose 4, Eurasian Wigeon 1 male, European Golden Plover 1, Northern Lapwing 380, Ruff 4, Common Redshank 10, Ruddy Turnstone 1, Common Swift 50, Bluethroat 3, Common Whitethroat 1, European Goldfinch 3. Water level risen by 10 cm, mud flat almost flooded.
Passing: White Stork 14.
July 12 - Great Cormorant 91, Eurasian Spoonbill 56, Mute Swan 28, Greylag Goose >1000, Garganey 1, Common Buzzard 1, Common Kestrel 1 pair, European Golden Plover 1, Ruff 7, Black-tailed Godwit 69, Eurasian Curlew 13, Spotted Redshank 8, Common Redshank 1, Wood Sandpiper 2, Common Sandpiper 3, Stock Dove 1, Common Whitethroat 1, Bearded Reedling 2, European Goldfinch 2 adult 1 juvenile.
Meeslouwerplas: Mute Swan 31, Eurasian Sparrowhawk 1, Common Buzzard 1, Great Spotted Woodpecker 1, Short-toed Tree Creeper 1, Eurasian Bullfinch 1 pair, Black Swan 1.
Leidschendammerhout: White Stork 2 juvenile.
July 11 - Eurasian Wigeon 2.
Leidschendammerhout: White Stork 2 + 2 young (young fledged today).
July 10 - Black-necked Grebe 1, Grey Heron 12, Eurasian Spoonbill 55, Mute Swan 26, Eurasian Wigeon 1, Garganey 2, Western Marsh Harrier 1 male, Pied Avocet 41 + 15 pulli, Little Ringed Plover 1, European Golden Plover 12, Ruff 21, Whimbrel 2, Eurasian Curlew 258, Spotted Redshank 6, Common Kingfisher 1, Bluethroat 1 male, Bearded Reedling 2, Ringed Teal 1 male, Red Fox 1 (south side).
Leidschendammerhout: Common Grasshopper Warbler 1.
Passing: White Stork 3.
July 7 - Eurasian Spoonbill 45, Greater White-fronted Goose 1, Eurasian Wigeon 2 male, Pheasant 3, Pied Avocet >50, Little Ringed Plover 1, Ruff 8, Black-tailed Godwit >200, Spotted Redshank 4, Common Greenshank 4, Common Sandpiper 1, Stock Dove 1.
Meeslouwerplas: Common Kingfisher 1, Black Swan 1.
Leidschendammerhout: White Stork 1 + 2 young, Common Buzzard 1, Common Grasshopper Warbler 1, Marsh Warbler 1.
July 6 - Western Marsh Harrier 2 male 1 female, Eurasian Hobby 1, Ruff 4, Whimbrel 1, Spotted Redshank 6, Common Sandpiper 6.
July 4 - Great Cormorant 81, Eurasian Spoonbill 41, Mute Swan 17, Greylag Goose >900, Common Goldeneye 1 male (moulting), Common Buzzard 1, Eurasian Oystercatcher 4, Pied Avocet 85, Little Ringed Plover 3, Ruff 5, Black-tailed Godwit 54, Eurasian Curlew 12, Spotted Redshank 6, Common Redshank 8, Common Greenshank 2, Green Sandpiper 1, Common Sandpiper 1, Common Swift 30, Sand Martin 2, Red Fox 1 (along southern bank).
Meeslouwerplas: Mute Swan 29, Common Cuckoo 1 male, Common Kingfisher 1 (behind parking lot), Black Swan 1.
July 2 - Great Cormorant 70, Eurasian Spoonbill 35, Mute Swan 22, Eurasian Wigeon 2 male, Common Goldeneye 1 female, Western Marsh Harrier 1 3cy male, Eurasian Sparrowhawk 1, Common Buzzard 1, Eurasian Hobby 2, Pied Avocet 66 + 18 pulli, Little Ringed Plover 2, Ruff 3, Whimbrel 1, Spotted Redshank 6, Common Cuckoo 1, Common Swift 250.
Meeslouwerplas: Common Kestrel 1 pair + 3 young.
July 1 - Eurasian Spoonbill 45, Little Ringed Plover 5, Spotted Redshank 1, White-winged Tern 1.

June 2011

June 30 - Great Cormorant 51, Eurasian Spoonbill 40, Mute Swan 21, Eurasian Wigeon 2 male, Common Buzzard 1, Common Kestrel 3 (young fed by parent), Eurasian Oystercatcher 9, Pied Avocet >80, Black-tailed Godwit >65, Spotted Redshank 3, Common Redshank 6, Green Sandpiper 1, Common Sandpiper 1, Little Tern 1, White-winged Tern 1 adult (moulting bird, returning to mud flat, present the whole evening).
Meeslouwerplas: Common Cuckoo 2 male, Common Kingfisher 1 (pond behind parking lot), Winter Wren 5, Blackcap 4, Northern Chiffchaff 6.
June 29 -
Vlietland: Tawny Owl 1 (in the evening crossing de Vliet).
June 27 - Great Cormorant 36, Grey Heron 4, White Stork 1, Eurasian Spoonbill 33, Eurasian Wigeon 2, Common Teal 1 male 1 female, Common Kestrel 1 male, Eurasian Hobby 1 (hunting Barn Swallow), Eurasian Oystercatcher 218, Pied Avocet 42 + 20 pulli, Little Ringed Plover 6 + 4 juvenile, Ruff 1 female, Black-tailed Godwit 182, Eurasian Curlew 385, Spotted Redshank 6, Common Redshank 100 + 11 juvenile, Green Sandpiper 6, Wood Sandpiper 1, Common Sandpiper 1, Black-headed Gull 850, Common Gull 12, Lesser Black-backed Gull 105, European Herring Gull 24, Common Tern 122, Barn Swallow 170, Bluethroat 2.
Leidschendammerhout: White Stork 1 + 2 juvenile.
Passing: Grey Heron 5, Common Starling 900 SW.
June 26 - Common Kingfisher 1 (south west side).
Meeslouwerplas: Common Kestrel 5 juvenile (on the walking trail).
June 25 - Eurasian Spoonbill 11, Emporer Goose 11 (shortly present around 6:00), Egyptian Goose 35, Western Marsh Harrier 1, Common Buzzard 1, Little Ringed Plover 6, Eurasian Curlew 140, Spotted Redshank 5, Green Sandpiper 2, Black Tern 1, Common Cuckoo 1, Common Swift 220, Sand Martin 210, Barn Swallow 60, Bluethroat 5, Common Grasshopper Warbler 1, Sedge Warbler 23, Marsh Warbler 6, European Reed Warbler 22, Lesser Whitethroat 1, Common Whitethroat 3, European Greenfinch 6, Common Reed Bunting 14.
Leidschendammerhout: Marsh Warbler 2, European Reed Warbler 1.
Passing: Rose-ringed Parakeet 2, Common Starling 700 NE.
June 20 - Black-necked Grebe 1, Great Cormorant 14, White Stork 2 (on artificial nest Kniplaan), Eurasian Spoonbill 22, Mute Swan 22, Eurasian Wigeon 3 male, Common Teal 3 male 1 female, Garganey 2 male 5 female, Western Marsh Harrier 1 male 1 female, Common Buzzard 1, Common Kestrel 1, Eurasian Oystercatcher 148, Pied Avocet 48, Little Ringed Plover 6, Common Ringed Plover 1, Black-tailed Godwit 390 + 10 juvenile, Eurasian Curlew 150, Spotted Redshank 4, Common Redshank 109 + 6 juvenile, Common Greenshank 1, Green Sandpiper 2, Black-headed Gull 1100, Common Gull 6, Lesser Black-backed Gull 147, European Herring Gull 83, Common Tern 130, Common Cuckoo 1 male 1 female, Long-eared Owl 1 hunting, Common Swift 20, Barn Swallow 22, Bluethroat 1 male 1 female, European Greenfinch 7.
Meeslouwerplas: Bluethroat 2 male, Black Swan 1.
Passing: Grey Heron 5 W, Eurasian Curlew 8 SW.
June 16 - Great Crested Grebe 10, Black-necked Grebe 1, Eurasian Spoonbill 8, Mute Swan 30, Eurasian Wigeon 3 male, Gadwall 152, Common Teal 11, Garganey 2 male, Northern Shoveler 95, Tufted Duck 61 + 24 pulli, Western Marsh Harrier 1 male (picked a young Mallard from the water), Common Buzzard 1, Eurasian Coot 106, Pied Avocet 40, Little Ringed Plover 6, Common Ringed Plover 3, Black-tailed Godwit 24, Eurasian Curlew 2, Spotted Redshank 1, Common Redshank 14, Green Sandpiper 4, Common Tern 79, Common Swift 70, Sand Martin 20, Barn Swallow 60, Common House Martin 40, Bluethroat 1, European Goldfinch 2.
Leidschendammerhout: White Stork 2, Common Buzzard 2, Bluethroat 1, Marsh Warbler 1.
June 14 - Black-necked Grebe 3, Great Cormorant 6, Eurasian Spoonbill 14, Mute Swan 25, Eurasian Wigeon 6 male 1 female, Common Teal 5 male 1 female, Garganey 3, Common Kestrel 1, Eurasian Oystercatcher 73, Pied Avocet 43, Little Ringed Plover 7, Dunlin 1, Black-tailed Godwit 500, Eurasian Curlew 97, Spotted Redshank 5, Common Redshank 149 (record count, 1 cr-ringed, 1 juvenile), Common Greenshank 1, Black-headed Gull 1100, Lesser Black-backed Gull 74, Common Tern 86, Common Cuckoo 1 male 1 female, Common Swift 90, Barn Swallow 40, Bluethroat 2 male, European Goldfinch 2.
Meeslouwerplas: Mute Swan 32, Bluethroat 2 male, Black Swan 3.
Leidschendammerhout: White Stork 2 young, Common Buzzard 2.
Passing: European Goldfinch 2 W.
June 13 - Black-necked Grebe 1, Eurasian Spoonbill 7, Eurasian Wigeon 4 male, Common Teal 8 male 1 female, Little Ringed Plover 4, Spotted Redshank 3, Green Sandpiper 2.
June 12 - Black-necked Grebe 1, Great Cormorant 9, White Stork 1 (rattling on artificial nest), Eurasian Spoonbill 8, Mute Swan 31, Greylag Goose 80, Canada Goose 19, Common Shelduck 28 + 15 pul, Eurasian Wigeon 4 male, Gadwall 200, Common Teal 7 male 1 female, Garganey 1 male 1 female, Northern Shoveler 78, Common Pochard 35, Tufted Duck 80, Common Buzzard 1, Common Kestrel 2 male 1 female, Pied Avocet 43, Little Ringed Plover 8, Spotted Redshank 3, Common Greenshank 1, Common Tern 80, Common Cuckoo 4, Common Swift 50, Sand Martin 10, Barn Swallow 20, Common House Martin 25, Bluethroat 4 male 1 female, Sedge Warbler 31, Marsh Warbler 17, European Reed Warbler 34, Common Whitethroat 3, Willow Warbler 15, European Goldfinch 10, Common Reed Bunting 11, Red Fox 1 (south west side).
Meeslouwerplas: Common Kingfisher 2.
Leidschendammerhout: White Stork 2, Common Buzzard 2, Common Kingfisher 1, Marsh Warbler 1, European Reed Warbler 1.
Passing: Great Cormorant 8, White Stork 2, Stock Dove 5.
June 10 - Great Crested Grebe 10, Black-necked Grebe 3, Great Cormorant 9, Eurasian Spoonbill 2, Common Shelduck 4 pair 19 pulli, Gadwall 1 pair 4 pulli, Common Teal 6 male 1 female, Common Pochard 1 female 6 pulli, Western Marsh Harrier 1 male, Common Moorhen 1 + 1 pul, Eurasian Coot 4 pair 7 pulli, Pied Avocet 50, Little Ringed Plover 2, Black-tailed Godwit 236, Eurasian Curlew 58, Spotted Redshank 2, Common Redshank 20, Common Greenshank 1, Common Swift 50, Barn Swallow 25.
Meeslouwerplas: Common Kingfisher 1.
Leidschendammerhout: White Stork 3 + 2 young.
Passing: Eurasian Spoonbill 4 E.
June 9 - Eurasian Spoonbill 15, Barnacle Goose 1, Eurasian Wigeon 3 male, Common Teal 2 male 1 female, Little Ringed Plover 1, Common Ringed Plover 4.
Leidschendammerhout: Common Shelduck 2 + 10 pul, Marsh Warbler 2, Icterine Warbler 1.
June 8 - Black-necked Grebe 3, Eurasian Spoonbill 3, Mute Swan 28, Eurasian Wigeon 3 male, Common Teal 9 male 1 female, Garganey 3 male, Western Marsh Harrier 1 male 1 female, Pied Avocet 48, Little Ringed Plover 7, Common Ringed Plover 6, Black-tailed Godwit 750 (5 cr-ringed), Eurasian Curlew 78, Common Redshank 28, Mediterranean Gull 2 adult 1 2cy, Black-headed Gull 800, Common Gull 2, Lesser Black-backed Gull 144, European Herring Gull 78, Common Tern 105, Common Swift 60.
Meeslouwerplas: Mute Swan 18, Common Kestrel 1.
Leidschendammerhout: White Stork 2 + 3 juvenile.
June 7 - Black-necked Grebe 3, Eurasian Spoonbill 8, Garganey 1, Common Kestrel 1, Pied Avocet 16, Little Ringed Plover 2, Red Knot 1, Dunlin 1, Black-tailed Godwit 209, Eurasian Curlew 57, Spotted Redshank 1 summer plumage, Common Redshank 8, Common Cuckoo 1, Great Spotted Woodpecker 1, European Goldfinch 2.
Passing: White Stork 1 S, Common Buzzard 1.
June 6 - Black-necked Grebe 3, Eurasian Spoonbill 5, Mute Swan 48, Common Shelduck 59 + 10 pulli, Common Teal 2 male, Mallard 16 pulli, Garganey 1 male, Western Marsh Harrier 1 male, Pied Avocet 40, Little Ringed Plover 3, Red Knot 1, Black-tailed Godwit 30, Common Redshank 8, Common Greenshank 1, Common Swift 40, Sand Martin 10, Barn Swallow 80, Common House Martin 20, European Goldfinch 4.
Meeslouwerplas: Common Kingfisher 1.
Leidschendammerhout: White Stork 6, Common Buzzard 2, Eurasian Oystercatcher 4, Northern Lapwing 28, Rose-ringed Parakeet 2, Great Spotted Woodpecker 1, Barn Swallow 12, Bluethroat 1 male.
June 4 - Great Crested Grebe 8, Black-necked Grebe 8, Great Cormorant 13, Eurasian Spoonbill 5, Mute Swan 47, Common Shelduck 67 + 8 pulli, Eurasian Wigeon 5 male 1 female, Common Teal 1 male, Western Marsh Harrier 1 male, Common Buzzard 2, Eurasian Oystercatcher 10, Pied Avocet 37, Little Ringed Plover 4, Common Ringed Plover 2, Little Stint 1, Black-tailed Godwit 83, Eurasian Curlew 53, Spotted Redshank 3, Common Redshank 22, Little Gull 1 2cy, Lesser Black-backed Gull 57, Common Tern 74.
Leidschendammerhout: White Stork 2 + 2 young, Common Buzzard 1.
June 3 - Western Marsh Harrier 1 male.
June 2 - Black-necked Grebe 3, Eurasian Wigeon 1 male, Curlew Sandpiper 1, Bluethroat 1.
Leidschendammerhout: White Stork 1 female 2 young.
June 1 - Black-necked Grebe 7, Great Cormorant 10, Eurasian Spoonbill 7, Mute Swan 37, Common Shelduck 43 + 5 pulli, Eurasian Wigeon 5 male, Western Marsh Harrier 1 male, Common Buzzard 1, Eurasian Oystercatcher 11, Pied Avocet 36, Common Ringed Plover 2, Curlew Sandpiper 1, Black-tailed Godwit 28, Eurasian Curlew 32, Common Redshank 10, Little Gull 1 2cy, Common Swift 40.
Meeslouwerplas: Great Crested Grebe 6, Mute Swan 11, Common Cuckoo 1, Black Swan 1.
Leidschendammerhout: White Stork 5 + 2 pulli, Rose-ringed Parakeet 9, Common Cuckoo 1, Great Spotted Woodpecker 1.

May 2011

May 30 - Black-necked Grebe 7, Great Cormorant 10, Eurasian Spoonbill 7, Mute Swan 31, Canada Goose 26, Egyptian Goose 8, Common Shelduck 51 + 4 pulli, Gadwall 302, Western Marsh Harrier 1 female, Pied Avocet 36, Common Ringed Plover 2, Black-tailed Godwit 62, Eurasian Curlew 34, Common Redshank 18, Little Gull 2nd cy, Common Tern 60.
May 29 - Eurasian Spoonbill 7, Northern Pintail 1 male, Western Marsh Harrier 1 male, Common Kestrel 1 male, Pied Avocet 36, Common Redshank 12, Common Swift 30, Sand Martin 20, Barn Swallow 30, Common House Martin 130, Bluethroat 2.
Meeslouwerplas: Mute Swan 8, Common Buzzard 1, Bluethroat 2, Black Swan 1.
Leidschendammerhout: Common Buzzard 2, Eurasian Hobby 1.
Passing: Common Ringed Plover 1 SW.
May 27 - Great Crested Grebe 12, Black-necked Grebe 5, Eurasian Spoonbill 6, Mute Swan 37, Common Shelduck 48 + 5 pulli, Eurasian Wigeon 6 male 1 female, Northern Pintail 1 male, Western Marsh Harrier 1 male, Common Kestrel 1, Eurasian Coot 70, Eurasian Oystercatcher 10, Pied Avocet 32, Black-tailed Godwit 88, Eurasian Curlew 2, Common Redshank 19, Common Cuckoo 1, Common Swift 160, Sand Martin 35, Barn Swallow 80, Common House Martin 60.
May 25 - Great Crested Grebe 14, Black-necked Grebe 7, Little Egret 2, Eurasian Spoonbill 7, Mute Swan 27, Egyptian Goose 25, Common Shelduck 47, Eurasian Wigeon 4 male 1 female, Red-crested Pochard 1 male, Western Marsh Harrier 1 male, Northern Goshawk 1 flew with prey towards Haagwijk, Common Buzzard 1, Pied Avocet 30, Little Ringed Plover 1, Common Ringed Plover 5, Northern Lapwing 71, Dunlin 1, Black-tailed Godwit 26, Bar-tailed Godwit 1 female, Eurasian Curlew 2, Common Redshank 15, Common Sandpiper 3, Mediterranean Gull 1 adult, Sandwich Tern 1 flying above colony Black-headed Gulls, Bluethroat 6 singing, Common Grasshopper Warbler 1, Sedge Warbler 20, Marsh Warbler 16, European Reed Warbler 38, Long-tailed Tit 2, Common Reed Bunting 12.
Meeslouwerplas: Common Buzzard 1, Common Cuckoo 1, Common Kingfisher 1.
Leidschendammerhout: White Stork 2 + 2 juvenile, Common Buzzard 1, Bluethroat 1, Sedge Warbler 1, Marsh Warbler 2, European Reed Warbler 4, European Goldfinch 2.
Passing: Stock Dove 2.
May 23 - Black-necked Grebe 5, Eurasian Spoonbill 5, Mute Swan 25, Common Shelduck 40 + 8 pulli, Red-crested Pochard 1 male, Common Pochard 1 female + 9 pulli, Eurasian Oystercatcher 10, Pied Avocet 21, Common Ringed Plover 5, Black-tailed Godwit 9, Bar-tailed Godwit 1, Eurasian Curlew 8, Common Redshank 11, Common Sandpiper 3, Little Gull 2, Common Swift 50, Sand Martin 1, Barn Swallow 40.
Meeslouwerplas: Common Kingfisher 1.
Leidschendammerhout: Common Buzzard 1, Common Redshank 2, Rose-ringed Parakeet 2.
May 22 - Marsh Warbler 3.
Vlietland: Common Cuckoo ruphous morph.
May 21 - Great Crested Grebe 9, Black-necked Grebe 5, Great Cormorant 10, Eurasian Spoonbill 4 + 1 juvenile, Mute Swan 29, Egyptian Goose 6, Common Shelduck 34 + 5 pulli, Mallard 27 pulli, Northern Pintail 1 male, Red-crested Pochard 1 male, Common Buzzard 1, Eurasian Oystercatcher 25, Pied Avocet 14, Black-tailed Godwit 32, Eurasian Curlew 44, Common Redshank 10, Common Sandpiper 4, Little Gull 1.
Leidschendammerhout: White Stork 2 + 2 young, Common Buzzard 1, Eurasian Hobby 1, Common Redshank 2, Common Cuckoo 1 male, Bluethroat 1 male, Song Thrush 2, Short-toed Tree Creeper 1, Common Reed Bunting 4 male.
May 20 - Black-necked Grebe 3, White Stork 1 (resting on artificial nest Kniplaan), Eurasian Spoonbill 3, Mute Swan 30, Greater White-fronted Goose 1, Lesser Canada Goose 1, Barnacle Goose 7, Common Shelduck 35, Northern Pintail 1 male, Western Marsh Harrier 1 male 1 female, Eurasian Sparrowhawk 1, Eurasian Hobby 2 hunting on Barn Swallows, Pied Avocet 10, Common Ringed Plover 12, Ruff 2 female 1 male, Black-tailed Godwit 180, Bar-tailed Godwit 1 female, Eurasian Curlew 39, Common Redshank 12, Common Sandpiper 3, Common Gull 8, Lesser Black-backed Gull 127, Common Tern 130, Common Cuckoo 2, Common Kingfisher 1, Barn Swallow 50.
May 19 - Black-necked Grebe 4, Eurasian Spoonbill 1, Mute Swan 27, Greater White-fronted Goose 1, Barnacle Goose 1, Common Shelduck 17, Eurasian Wigeon 4 male 1 female, Northern Pintail 1 male, Garganey 1 male, Common Pochard 5, Western Marsh Harrier 1 male 1 female, Eurasian Oystercatcher 8, Pied Avocet 6, Common Ringed Plover 1, Black-tailed Godwit 40, Eurasian Curlew 22, Common Redshank 7, Common Sandpiper 2, European Goldfinch 3.
Meeslouwerplas: Common Kingfisher 2.
Leidschendammerhout: White Stork 1, Common Whitethroat 2.
Passing: Common Buzzard 1 N.
May 18 - Black-necked Grebe 5, Great Cormorant 2, Eurasian Spoonbill 1, Mute Swan 31, Eurasian Wigeon 4 male, Gadwall 132, Northern Pintail 1 male, Pied Avocet 5, Dunlin 3, Ruff 1, Eurasian Curlew 32, Common Redshank 15, Black Tern 1, Common Swift 150, Sand Martin 20, Barn Swallow 60, Common House Martin 10, Common Grasshopper Warbler 1, Common Whitethroat 4.
Leidschendammerhout: White Stork 1 + 1 young, Great Spotted Woodpecker 5, Sedge Warbler 2, European Reed Warbler 2, Long-tailed Tit 2, Short-toed Tree Creeper 4, European Goldfinch 1. Common Noctule 1.
May 17 - Great Crested Grebe 9, Black-necked Grebe 4, Eurasian Spoonbill 2, Mute Swan 42, Common Shelduck 52, Northern Pintail 1 male, Eurasian Sparrowhawk 1, Eurasian Oystercatcher 19, Pied Avocet 4, Little Ringed Plover 2, Little Stint 3, Dunlin 3, Black-tailed Godwit 13, Eurasian Curlew 9, Common Redshank 11, Common Sandpiper 5, Common Tern 31, Black Tern 1, Common Cuckoo 1, Common Swift >100, Sand Martin 2, Barn Swallow 15, Common House Martin 40, Common Whitethroat 2.
Leidschendammerhout: White Stork 3 + 2 young, Common Buzzard 3.
May 15 - Great Crested Grebe 14, Black-necked Grebe 6, Great Cormorant 1, Eurasian Spoonbill 2, Mute Swan 28, Barnacle Goose 6, Egyptian Goose 20, Common Shelduck 20, Eurasian Wigeon 5 male 2 female, Gadwall 60, Northern Pintail 1 male, Northern Shoveler 17 male 2 female, Common Pochard 4 male 1 female, Tufted Duck 13 male 1 female, Western Marsh Harrier 1 male 1 female, Pied Avocet 8, Common Ringed Plover 7, Grey Plover 1, Curlew Sandpiper 1, Common Sandpiper 6, Stock Dove 1, Common Cuckoo 5, Common Swift 500, Common House Martin 20, Bluethroat 4, Common Grasshopper Warbler 1, Sedge Warbler 32, Marsh Warbler 1, European Reed Warbler 41, Common Whitethroat 2.
Passing: White Stork 1, Eurasian Sparrowhawk 2, Rose-ringed Parakeet 1.
May 14 - Great Crested Grebe 6, Black-necked Grebe 5, Eurasian Spoonbill 2, Mute Swan 31, Greater White-fronted Goose 3, Greylag Goose 145, Canada Goose 2, Egyptian Goose 4, Common Shelduck 18, Eurasian Wigeon 5 male 2 female, Gadwall 143, Red-crested Pochard 1 male, Eurasian Oystercatcher 6, Pied Avocet 1, Black-tailed Godwit 10, Eurasian Curlew 27, Common Redshank 17, Common Sandpiper 3, Lesser Black-backed Gull 35, Common Tern 55, Common Swift 140, Barn Swallow 20.
Leidschendammerhout: White Stork 2 + 2 young (artificial nest), Black-tailed Godwit 2, Rose-ringed Parakeet 2, Barn Swallow 2.
Passing: Osprey 1 NNE (4:20 PM).
May 12 - Grey Heron 1, Eurasian Spoonbill 1 (cr-ringed), Mute Swan 6, Eurasian Wigeon 5 male 1 female, Western Marsh Harrier 1 male, Common Kestrel 1 female, Eurasian Oystercatcher 45, Pied Avocet 4, Black-tailed Godwit 36, Eurasian Curlew 50, Common Redshank 8 (1 cr-ringed), Black-headed Gull 700, Lesser Black-backed Gull 44, Common Tern 150, Common Cuckoo 1 male, Common Swift 70, Barn Swallow 50, White Wagtail 1, Common Grasshopper Warbler 1.
Meeslouwerplas: Mute Swan 1, Water Rail 1 (display call), Bluethroat 1, Black Swan 1.
Passing: White Stork 1.
May 11 - Black-tailed Godwit 15, Common Whitethroat 2.
May 9 - Black-necked Grebe 1, Eurasian Spoonbill 1, Black Tern 3, Common Cuckoo 1 male 1 female, Common Whitethroat 3.
Meeslouwerplas: Eurasian Sparrowhawk 1.
May 7 - Barn Owl 1 (crossed highway A4 at 4:15 AM).
May 6 -
Meeslouwerplas: Common Nightingale 2, Common Grasshopper Warbler 3, Sedge Warbler 13, European Reed Warbler 22, Lesser Whitethroat 1, Common Whitethroat 7, Garden Warbler 7, Blackcap 10.
May 4 - Mute Swan 52, Egyptian Goose 8, Common Shelduck 7, Eurasian Wigeon 5 male 4 female, Gadwall 1 pair + 10 pulli, Common Teal 1 male 1 female, Eurasian Oystercatcher 8, Pied Avocet 6, Black-tailed Godwit 6, Eurasian Curlew 10, Spotted Redshank 2, Common Redshank 2, Common Sandpiper 2, Little Gull 3, Great Black-backed Gull 1, Common Tern 34, Black Tern 5, Common Swift 65, Black Swan 1.
Leidschendammerhout: White Stork 2, Eurasian Spoonbill 1, Common Buzzard 2, Rose-ringed Parakeet 1.
May 2 - Common Shelduck 15, Garganey 1 male, Tufted Duck 109, Eurasian Oystercatcher 25, Pied Avocet 18, Black-tailed Godwit 21, Eurasian Curlew 3, Spotted Redshank 1, Common Sandpiper 1, Black Tern 5, Barn Swallow 2, Common Whitethroat 1.
Passing: Eurasian Spoonbill 1 N.

April 2011

April 29 - Great Crested Grebe 14, Mute Swan 46, Red-crested Pochard 1 male 1 female, Tufted Duck 93 male 50 female, Western Marsh Harrier 1 male 1 female, Common Buzzard 1, Pied Avocet 14, Black-tailed Godwit 3, Whimbrel 1, Eurasian Curlew 18, Spotted Redshank 3, Common Greenshank 2, Little Gull 2, Common Tern 31, Black Tern 3, Bluethroat 2, Whinchat 1 male, Savi's Warbler 1, Sedge Warbler 19, Marsh Warbler 1, European Reed Warbler 6, Common Reed Bunting 11.
Meeslouwerplas: Common Cuckoo 1.
Leidschendammerhout: Egyptian Goose 24, Eurasian Sparrowhawk 1, Common Buzzard 2, Great Spotted Woodpecker 1, Barn Swallow 6, Garden Warbler 3, Blackcap 7, Willow Warbler 8, House Sparrow 6.
Passing: Sand Martin 4 NE.
April 28 - Great Crested Grebe 17, Mute Swan 37, Common Shelduck 7, Gadwall 87 male 16 female, Northern Shoveler 31 male 17 female, Western Marsh Harrier 1 male 1 female, Eurasian Oystercatcher 41, Pied Avocet 4, Black-tailed Godwit 14, Eurasian Curlew 45, Spotted Redshank 2, Lesser Black-backed Gull 79, Great Black-backed Gull 1, Common Tern 36, Black Tern 1.
Leidschendammerhout: Common Buzzard 1.
April 26 - Great Crested Grebe 17, Eurasian Spoonbill 1, Mute Swan 39, Greylag Goose 6 pulli, Eurasian Wigeon 33, Gadwall 81, Mallard 10 pulli, Northern Shoveler 47, Red-crested Pochard 1 male 1 female, Common Pochard 16, Tufted Duck 118, Western Marsh Harrier 2 male, Common Buzzard 1, Eurasian Oystercatcher 8, Pied Avocet 8, Ruff 1, Black-tailed Godwit 11, Spotted Redshank 1, Common Redshank 1, Common Sandpiper 1, Black-headed Gull 400 ca. 160 nests, Lesser Black-backed Gull 70, Common Tern 55, Black Tern 3, Barn Swallow 9, Dunnock 3, European Robin 4, Savi's Warbler 1, Sedge Warbler 23, Common Whitethroat 3, Blackcap 4, Northern Chiffchaff 8, Willow Warbler 7, European Goldfinch 4, Common Reed Bunting 13.
Meeslouwerplas: Great Crested Grebe 12, Red-crested Pochard 1 female, Common Cuckoo 1 male, Common Kingfisher 1 male pond near parkinglot, Song Thrush 2, Blackcap 10, Northern Chiffchaff 5, Willow Warbler 4.
Leidschendammerhout: White Stork 2, Spotted Redshank 1, Barn Swallow 4.
April 24 - Great Crested Grebe 12, Horned Grebe 1 summer plumage, Grey Heron 1, White Stork 1, Mute Swan 25, Canada Goose 15, Common Shelduck 19, Eurasian Wigeon 18 male 7 female, Gadwall 60 male 15 female, Common Teal 1 male, Garganey 1 male, Red-crested Pochard 5 male 1 female, Common Goldeneye 1 male 1 female, Western Marsh Harrier 1 male 1 female, Common Buzzard 1, Pheasant 4 male, Pied Avocet 3, Black-tailed Godwit 9, Eurasian Curlew 3, Common Sandpiper 1, Common Cuckoo 2, Bluethroat 4 male, Common Grasshopper Warbler 2, Sedge Warbler 38, European Reed Warbler 9, Common Whitethroat 3, Common Reed Bunting 18 male 2 female.
Leidschendammerhout: White Stork 1 on artificial nest, Common Teal 1 male 1 female, Bluethroat 1.

April 22 - Little Grebe 1, Great Crested Grebe 7, Great Cormorant 5, Grey Heron 2, Eurasian Spoonbill 1, Mute Swan 3, Greylag Goose 9, Canada Goose 4, Common Shelduck 2, Gadwall 6, Common Teal 2, Mallard 9, Northern Shoveler 3, Red-crested Pochard 2 male 1 female, Common Pochard 2, Tufted Duck 6, Common Goldeneye 1 male, Common Buzzard 1, Common Kestrel 1, Pheasant 1, Eurasian Coot 3, Eurasian Oystercatcher 5, Northern Lapwing 3, Ruff 1, Black-tailed Godwit 5, Eurasian Curlew 2, Black-headed Gull >30, Common Tern 5, Black Tern 5, Barn Swallow 7, Winter Wren 1, European Robin 1, Common Blackbird 3, Song Thrush 1, Sedge Warbler 5, European Reed Warbler 3, Common Whitethroat 1, Garden Warbler 1, Blackcap 4, Northern Chiffchaff 3, Willow Warbler 2, Long-tailed Tit 1, Blue Tit 1, Eurasian Jay 2, Common Magpie 5, Carrion Crow 2, Common Chaffinch 2, Common Reed Bunting 1.
Meeslouwerplas: Red-crested Pochard 1 male, Common Pochard 2 male 2 female, Common Sandpiper 5, Common Nightingale 4, Bluethroat 1, Common Grasshopper Warbler 1, European Reed Warbler 4.
Leidschendammerhout: Eurasian Spoonbill 1, Bluethroat 1, Northern Wheatear 1 male female, Sedge Warbler 2, Common Reed Bunting 2.
April 21 - Great Crested Grebe 12, Black-necked Grebe 2, Eurasian Spoonbill 1, Mute Swan 14, Greylag Goose 2 pair + 5 pulli, Egyptian Goose 4, Common Shelduck 12, Eurasian Wigeon 36, Gadwall 93, Northern Pintail 1 male 1 female, Northern Shoveler 95, Red-crested Pochard 5 male 3 female, Common Goldeneye 1 male 1 female, Western Marsh Harrier 1 male 1 female, Eurasian Oystercatcher 25, Pied Avocet 7, Black-tailed Godwit 80, Whimbrel 3, Eurasian Curlew 12, Spotted Redshank 1, Lesser Black-backed Gull 52, Common Tern 26.
Leidschendammerhout: White Stork 3, Northern Wheatear 1.
April 20 - Black-necked Grebe 1, Common Goldeneye 1 female, Western Marsh Harrier 1 female, Bluethroat 2, Ring Ouzel 1 male, Common Grasshopper Warbler 3, Common Whitethroat 2.
Meeslouwerplas: Common Cuckoo 1, Common Nightingale 2, Common Grasshopper Warbler 1.
Leidschendammerhout: Bluethroat 1, Northern Wheatear 2.
Passing: Osprey 1 SW (9:40 AM).

April 19 - Northern Pintail 1 male 1 female, Garganey 1 male, Red-crested Pochard 1 male 1 female, Common Goldeneye 1 male 1 female, Pied Avocet 6, Black-tailed Godwit 180, Eurasian Curlew 9, Spotted Redshank 1, Common Redshank 1, Little Gull 20, Great Black-backed Gull 1, Black Tern 10.
Meeslouwerplas: Common Kingfisher 1 male pond near parking lot.
April 17 - Greylag Goose 33, Common Shelduck 1 male 1 female, Gadwall 12 male 12 female, Northern Shoveler 10 male 10 female, Red-crested Pochard 2 male 2 female, Tufted Duck 36 male 36 female, Western Marsh Harrier 1 male, Common Moorhen 5, Pied Avocet 2, Black-tailed Godwit 198, Spotted Redshank 1 summer plumage, Black-headed Gull 106 nests, Bluethroat 2, Sedge Warbler 43, European Reed Warbler 1, Common Whitethroat 1, Blackcap 2 male 1 female, Northern Chiffchaff 5, Common Reed Bunting 11.
Leidschendammerhout: White Stork 1, Common Pochard 1 male 1 female, Common Buzzard 2, Pheasant 6 male, Barn Swallow 1, Winter Wren 33, Dunnock 2, Bluethroat 1, Song Thrush 3, Blackcap 9, Northern Chiffchaff 14, Willow Warbler 8, Short-toed Tree Creeper 2, Eurasian Jay 1 pair, Common Reed Bunting 2.
April 16 - Eurasian Spoonbill 2, Mute Swan 5, Common Goldeneye 2 male 4 female, Goosander 1, Western Marsh Harrier 1 female, Pied Avocet 3, Black-tailed Godwit 230, Eurasian Curlew 1, Black-headed Gull >100 nests, Lesser Black-backed Gull 94, Great Black-backed Gull 1.
Leidschendammerhout: White Stork 1, Eurasian Spoonbill 3.
April 15 - White Stork 1, Eurasian Spoonbill 1, Mute Swan 2, Egyptian Goose 10, Common Goldeneye 4 male 7 female, Western Marsh Harrier 1 female, Eurasian Oystercatcher 22, Pied Avocet 9, Black-tailed Godwit 320, Eurasian Curlew 40, Spotted Redshank 1, Lesser Black-backed Gull 47, Common Tern 8.
Leidschendammerhout: White Stork 1, Eurasian Spoonbill 1, Egyptian Goose 5, Barn Swallow 4.
April 14 - Great Crested Grebe 10, White Stork 1 on artificial nest, Eurasian Spoonbill 1, Mute Swan 2, Greylag Goose 1 male 1 female 2 pulli, Common Shelduck 8, Eurasian Wigeon 90, Gadwall 60, Northern Pintail 3 male 3 female, Tufted Duck 135, Common Goldeneye 4 male 9 female, Western Marsh Harrier 1 female, Eurasian Oystercatcher 22, Pied Avocet 14, Black-tailed Godwit 220, Common Redshank 1, Black-headed Gull 90 nests on shell island, Lesser Black-backed Gull 42, Common Tern 12, Bearded Reedling 1.
Leidschendammerhout: White Stork 1 on artificial nest, Egyptian Goose 7, Gadwall 10, Common Teal 12, Northern Shoveler 10, Tufted Duck 8, Eurasian Green Woodpecker 1, Blackcap 5, Willow Warbler 8, Hermine 1 also swimming.
April 13 - Great Crested Grebe 6, Grey Heron 3, White Stork 2, Mute Swan 2, Greylag Goose 39, Canada Goose 4, Barnacle Goose 2, Egyptian Goose 8, Common Shelduck 6, Eurasian Wigeon >35, Gadwall >30, Common Teal 7, Mallard >40, Northern Pintail >12, Northern Shoveler >35, Common Pochard >10, Tufted Duck >40, Common Goldeneye 5 male 12 female, Western Marsh Harrier 1 female, Common Moorhen >10, Eurasian Coot >10, Eurasian Oystercatcher 15, Pied Avocet 7, Northern Lapwing 3, Black-tailed Godwit 37, Common Redshank 2, Lesser Black-backed Gull >40, Common Tern 3, Sand Martin 8, Dunnock 1, Sedge Warbler 24, European Reed Warbler 1, Blackcap 2, Northern Chiffchaff 7, Willow Warbler 14, House Sparrow 6, Common Reed Bunting 7.
Meeslouwerplas: Common Buzzard 1 displaying.
Leidschendammerhout: White Stork 1 breeding on artificial nest, Eurasian Sparrowhawk 1, Common Buzzard 2, Pheasant 1.
Passing: Grey Heron 2.
April 12 - White Stork 1, Northern Pintail 3 male 3 female, Common Goldeneye 3 male 7 female, Western Marsh Harrier 1 male 1 female, Eurasian Oystercatcher 16, Pied Avocet 1, Black-tailed Godwit 200, Little Gull 2, Lesser Black-backed Gull 33, Common Tern 11.
Meeslouwerplas: Blackcap 5, Willow Warbler 8.
Leidschendammerhout: White Stork 2 on artificial nest, Egyptian Goose 5, Common Buzzard 2 display flight, Common Kestrel 1, Pied Avocet 1, Black-tailed Godwit 33, Blackcap 4, Willow Warbler 6.
Passing: White Stork 1 W.
April 11 -
Passing: Purple Heron 1.
April 10 -
Vlietland: Eurasian Sparrowhawk 1, Common Buzzard 1, Winter Wren 9, European Robin 6, Sedge Warbler 1, Garden Warbler 1, Blackcap 10, Northern Chiffchaff 12, Willow Warbler 10, Common Chaffinch 1, European Greenfinch 2.
April 8 - White Stork 1 on artificial nest, Pied Avocet 3, Common Tern 1, Bluethroat 2, Savi's Warbler 1.
Meeslouwerplas: Common Kingfisher 1, Bluethroat 3.
Passing: Western Marsh Harrier 1 female N.
April 7 - White Stork 1 on artificial nest, Eurasian Spoonbill 1, Common Goldeneye 1 male 1 female, Common Buzzard 3, Pied Avocet 2, Black-tailed Godwit 300, Barn Swallow 4, Bluethroat 2, Sedge Warbler 6, Common Reed Bunting 4.
Leidschendammerhout: White Stork 2 on artificial nest.
April 6 - Black-necked Grebe 2 (1 summer and 1 winter plumage), White Stork 1 on artificial nest at Kniplaan, Greater White-fronted Goose 2, Barnacle Goose 28, Northern Pintail 6 male 4 female, Common Goldeneye 7 male 8 female, Eurasian Oystercatcher 137, Black-tailed Godwit 550, Common Redshank 3, Lesser Black-backed Gull 25, Common Tern 1.
Meeslouwerplas: Common Buzzard 2 displaying, Common Redshank 19, Bluethroat 1, Blackcap 3, Northern Chiffchaff 7, Willow Warbler 9.
Leidschendammerhout: White Stork 2 (1 on artificial nest; apparently breeding), Egyptian Goose 4, Common Shelduck 2, Gadwall 16, Common Teal 6, Common Pochard 4, Common Buzzard 2, Eurasian Oystercatcher 2, Northern Lapwing 6, Black-tailed Godwit 98, Common Redshank 2, Northern Chiffchaff 1, Willow Warbler 2.
passing: White Stork 1 NE, Western Marsh Harrier 2 NE, Common Buzzard 3 NE.
April 4 - Great Crested Grebe 10, Black-necked Grebe 2, Eurasian Spoonbill 2, Egyptian Goose 7, Common Shelduck 13, Northern Pintail 7 male 6 female, Tufted Duck 140, Common Goldeneye 5 male 7 female, Western Marsh Harrier 1 male 1 female, Eurasian Oystercatcher 146, Lesser Black-backed Gull 23, Dunnock 1.
Meeslouwerplas: Common Redshank 21, Great Spotted Woodpecker 2, Blackcap 2, Northern Chiffchaff 5, Willow Warbler 6.
Leidschendammerhout: White Stork 6, Canada Goose 6, Egyptian Goose 8, Common Shelduck 2, Gadwall 14, Common Teal 4, Northern Shoveler 34, Common Pochard 2, Tufted Duck 10, Common Buzzard 1, Black-tailed Godwit 71, Common Redshank 7, Eurasian Green Woodpecker 1, Northern Chiffchaff 3, Willow Warbler 1, Western Jackdaw 50, Carrion Crow 14.
Passing: Eurasian Sparrowhawk 1 W, Common Tern 1 S.
April 3 - Red-crested Pochard 1 male 1 female (southwest).
April 2 - Black-necked Grebe 6, White Stork 3, Eurasian Sparrowhawk 1, Pied Avocet 3, Common Tern 1.
Meeslouwerplas: Blackcap 1 male.
April 1 - Black-necked Grebe 6, Northern Pintail 7 male 3 female, Northern Shoveler 240, Common Pochard 16, Common Goldeneye 5 male 8 female, Eurasian Sparrowhawk 1, Common Buzzard 1, Eurasian Oystercatcher 140, Black-tailed Godwit 320, Lesser Black-backed Gull 41, Common Tern 1, Bluethroat 1.
Meeslouwerplas: Little Grebe 1, Horned Grebe 1, Common Goldeneye 1 male 1 female, Common Redshank 25, Bluethroat 2, Northern Chiffchaff 4, Willow Warbler 2.
Leidschendammerhout: White Stork 6, Canada Goose 4, Common Shelduck 6, Gadwall 10, Common Teal 3, Northern Shoveler 18, Common Pochard 4, Tufted Duck 6, Black-tailed Godwit 170, Common Redshank 1.

March 2011

March 31 - Black-necked Grebe 5, Great Cormorant 2, Grey Heron 1, Mute Swan 1, Northern Pintail 16, Common Goldeneye 16, Pied Avocet 7, Black-tailed Godwit 120, Lesser Black-backed Gull 45, Sand Martin 1, Barn Swallow 2, Water Pipit 1, Bluethroat 3, Sedge Warbler 1.
Meeslouwerplas: Horned Grebe 2, Common Kingfisher 1, Willow Warbler 2.
Leidschendammerhout: White Stork 1, Common Teal 8, Black-tailed Godwit 140, Common Redshank 1.
March 30 - Western Marsh Harrier 1 male 1 female.
March 29 - Little Grebe 1, Black-necked Grebe 5 (4 breeding plumage 1 winter plumage), Great Egret 1, White Stork 4 (3 shortly on artificial nest), Barnacle Goose 45, Common Shelduck 14, Common Goldeneye 5 male 7 female, Eurasian Oystercatcher 114, Pied Avocet 1, Common Snipe 4, Black-tailed Godwit 900, Common Redshank 3, Mediterranean Gull 2 adult, Lesser Black-backed Gull 34, Great Spotted Woodpecker 1, Water Pipit 1, Dunnock 3, Bluethroat 8, Northern Chiffchaff 4, Willow Warbler 3, Common Reed Bunting 11.
Meeslouwerplas: Little Grebe 1, Horned Grebe 2, Common Goldeneye 1 male 1 female, Common Redshank 6, Common Kingfisher 1, Northern Chiffchaff 4, Willow Warbler 2.
Leidschendammerhout: White Stork 2, Eurasian Sparrowhawk 1, Common Buzzard 1, Great Spotted Woodpecker 2, Song Thrush 2, Northern Chiffchaff 9, Willow Warbler 4, Short-toed Tree Creeper 1, House Sparrow 6, Common Reed Bunting 1.
Passing: Great Egret 3 SE.
March 28 - Black-necked Grebe 4, Eurasian Spoonbill 1, Common Goldeneye 1, Common Buzzard 2, Black-tailed Godwit 150, Bluethroat 1.
Leidschendammerhout: White Stork 1 breeding on artificial nest), Eurasian Spoonbill 1, Common Buzzard 2, Common House Martin 1.
March 27 - Black-necked Grebe 4, Grey Heron 1, Mute Swan 1, Common Teal 2 male 2 female, Northern Pintail 7 male 3 female, Common Goldeneye 2 male 5 female, Eurasian Sparrowhawk 1, Eurasian Oystercatcher 184, Pied Avocet 5, Black-tailed Godwit >900, Common Redshank 6, White Wagtail 1, Bluethroat 1, Common Reed Bunting 5 male 2 female.
Leidschendammerhout: Common Buzzard 2.
Vlietland: Willow Warbler 1 singing.

March 25 - Black-necked Grebe 3, Garganey 1 male, Common Goldeneye 1 male 2 female, Black-tailed Godwit 350, Common Redshank 2.
Passing: Common Snipe 2.
March 24 - Great Crested Grebe 6, Black-necked Grebe 6, Great Egret 1, Eurasian Spoonbill 1, Common Shelduck 18, Eurasian Wigeon 5500, Northern Pintail 9 male 6 female, Northern Shoveler 167, Common Goldeneye 6 male 9 female, Common Buzzard 1, Eurasian Oystercatcher 140, Pied Avocet 2, Black-tailed Godwit 1100, Common Redshank 5, Lesser Black-backed Gull 31, Bluethroat 2.
Meeslouwerplas: Little Grebe 2, Great Crested Grebe 17, Horned Grebe 2, Western Marsh Harrier 1 male, Common Buzzard 1, Common Redshank 16, Common Kingfisher 1, Northern Chiffchaff 2.
Leidschendammerhout: White Stork 3, Common Shelduck 4, Northern Pintail 2, Common Buzzard 1, Black-tailed Godwit 101, Common Redshank 1.
March 23 - Great Crested Grebe 10, Great Cormorant 10, Western Marsh Harrier 1 male 1 female, Water Rail 1, Pied Avocet 6, Black-tailed Godwit 150, Common Redshank 2, Bluethroat 3 (reed northside).
Meeslouwerplas: Great Egret 1 (small pool between MLP and Vliet), Common Redshank 9, Common Kingfisher 1.
Leidschendammerhout: White Stork 2 (on artificial nest), Common Buzzard 3, Long-tailed Tit 3.
Passing: Little Egret 1 W, Northern Goshawk 1 NE, Redwing 8.
March 22 - Spotted Redshank 1, Bluethroat 1.
March 21 - Great Egret 1, Mute Swan 6, Greater White-fronted Goose 96, Barnacle Goose 80, Egyptian Goose 5, Common Shelduck 25, Eurasian Wigeon 3300, Northern Pintail 8 male 5 female, Northern Shoveler 78, Common Goldeneye 5 male 8 female, Goosander 1 female (before seen in MLP) , Western Marsh Harrier 1 male, Eurasian Oystercatcher 65, Pied Avocet 4, Black-tailed Godwit 600, Eurasian Curlew 12, Common Redshank 3, Lesser Black-backed Gull 39, Common Kingfisher 1, Water Pipit 3, Bluethroat 1. bat hunting at south east side (probably noctule).
Meeslouwerplas: Little Grebe 2, Great Crested Grebe 21, Horned Grebe 2, Common Goldeneye 1 male 1 female, Goosander 1 female (flew to Starrevaart), Common Buzzard 2, Common Redshank 16, Common Kingfisher 1, Bluethroat 1, Northern Chiffchaff 4, Long-tailed Tit 2.
Leidschendammerhout: White Stork 3, Eurasian Spoonbill 2, Common Shelduck 4, Gadwall 11, Common Teal 21, Northern Pintail 2, Northern Shoveler 8, Black-tailed Godwit 81, Rose-ringed Parakeet 1, Great Spotted Woodpecker 1, Northern Chiffchaff 1, Short-toed Tree Creeper 1.
Passing: Great Cormorant 60 NE.
March 20 - Great Bittern 1, Egyptian Goose 15, Eurasian Oystercatcher 54, Pied Avocet 6, Black-tailed Godwit 270, Bluethroat 1.
Meeslouwerplas: Horned Grebe 2, Spotted Redshank 2, Common Redshank 9.
Leidschendammerhout: White Stork 4, Gadwall 27, Common Teal 33, Northern Pintail 5, Northern Shoveler 13, Common Redshank 1, Eurasian Skylark 1.
Vlietland: Little Grebe 5, Northern Chiffchaff 6.
March 19 - Great Crested Grebe 5, Great Cormorant 15, Grey Heron 2, White Stork 2, Mediterranean Gull 1 (red cr-ring, code not read), Northern Chiffchaff 3, Short-toed Tree Creeper 1.
Meeslouwerplas: Common Kingfisher 1.
Leidschendammerhout: Common Magpie 14, Common Chaffinch 2, Common Reed Bunting 10.
March 18 -
Meeslouwerplas: Little Grebe 2, Horned Grebe 2, Great Cormorant 2, Common Goldeneye 1 female, Common Buzzard 1, Water Rail 1, Common Redshank 10, Song Thrush 2, Northern Chiffchaff 1.
March 17 - Great Bittern 1, White Stork 2 (shortly displaying on artificial nest), Common Shelduck 21, Common Goldeneye 5 male 6 female, Eurasian Oystercatcher 80, Pied Avocet 4, Black-tailed Godwit 320, Lesser Black-backed Gull 6, Great Black-backed Gull 1, Common Chaffinch 10.
Meeslouwerplas: Little Grebe 2, Horned Grebe 2, Common Goldeneye 2 male 1 female, Common Redshank 9.
Leidschendammerhout: White Stork 4, Common Shelduck 2, Gadwall 12, Common Teal 19, Northern Pintail 3 male 1 female, Northern Shoveler 10, Tufted Duck 8, Eurasian Oystercatcher 2, Black-tailed Godwit 78, Mediterranean Gull 2 adult (feeding and resting between other Gulls), Common Wood Pigeon 45, Common Starling 500.
March 15 - Canada Goose 5, Barnacle Goose 48, Common Shelduck 24, Eurasian Wigeon 5400, Tufted Duck 211, Common Goldeneye 5 male 8 female, Eurasian Oystercatcher 129, Pied Avocet 1, Black-tailed Godwit 450, Common Redshank 3, Lesser Black-backed Gull 14, Great Black-backed Gull 1.
Meeslouwerplas: Horned Grebe 2 (NE side), Common Buzzard 2, Common Redshank 37, Northern Chiffchaff 3.
Leidschendammerhout: White Stork 2, Common Shelduck 4, Gadwall 14, Common Teal 9, Northern Shoveler 12, Common Buzzard 1, Black-tailed Godwit 104, Short-toed Tree Creeper 1, Western Jackdaw 80.
March 14 - Great Cormorant 6, Eurasian Oystercatcher 140, Dunlin 1, Black-tailed Godwit 320, Common Redshank 1, Lesser Black-backed Gull 8.
Meeslouwerplas: Little Grebe 3, Horned Grebe 2, Great Cormorant 5, Common Snipe 2, Common Redshank 8, Song Thrush 3, Northern Chiffchaff 2.
March 13 - Eurasian Spoonbill 2, Mute Swan 3, Greater White-fronted Goose 220, Canada Goose 85, Barnacle Goose 109, Egyptian Goose 6, Black-tailed Godwit 336, Common Redshank 5, Stock Dove 2, Water Pipit 6, Northern Chiffchaff 2, Common Reed Bunting 14 singing.
Meeslouwerplas: Little Grebe 3, Horned Grebe 2, Northern Chiffchaff 2.
Leidschendammerhout: Eurasian Sparrowhawk 1, Common Buzzard 3, Common Kestrel 1, Black-tailed Godwit 60, Common Stonechat 1 female.
Passing: Great Cormorant 5 NE, Meadow Pipit 5 NE, White Wagtail 3 NE, Western Jackdaw 12 NE, Common Reed Bunting 2.
March 12 - Water Rail 1.
Meeslouwerplas: Horned Grebe 2, Common Stonechat 1 male, Northern Chiffchaff 1.
March 11 - Little Grebe 1, Great Cormorant 2, Great Egret 2, Egyptian Goose 16, Common Shelduck 16, Eurasian Wigeon 4000, Chiloe Wigeon 1, Northern Pintail 6 male 4 female, Northern Shoveler 34, Common Goldeneye 4 male 8 female, Common Buzzard 3, Eurasian Oystercatcher 64, Pied Avocet 10, Black-tailed Godwit 440 (>40% Islandica), Eurasian Curlew 1, Common Redshank 2, Lesser Black-backed Gull 3, Meadow Pipit 3, Common Reed Bunting 3.
Meeslouwerplas: Little Grebe 2, Great Crested Grebe 13, Horned Grebe 2, Common Goldeneye 1 male, Common Buzzard 1, Common Redshank 9.
Leidschendammerhout: White Stork 3, Eurasian Spoonbill 1, Common Shelduck 6, Gadwall 12, Common Teal 6, Northern Pintail 4 male, Common Buzzard 3, Common Wood Pigeon 41, Short-toed Tree Creeper 1.
Passing: Pied Avocet 4 S, Western Jackdaw 13 W.
March 9 - Greater White-fronted Goose 500, Pied Avocet 6, Ruff 1, Black-tailed Godwit 220 (2 cr-ringed). Disturbance due to nearby hunting.
March 8 - Egyptian Goose 12, Northern Pintail 12 male 9 female, Common Goldeneye 3 male 7 female, Smew 1 female, Common Buzzard 1, Eurasian Oystercatcher 46, Pied Avocet 2, Black-tailed Godwit 71, Common Redshank 1, Lesser Black-backed Gull 10, Great Black-backed Gull 1.
Meeslouwerplas: Little Grebe 3, Great Crested Grebe 18, Horned Grebe 2.
March 7 - Common Goldeneye 6 male 4 female, Smew 1 female, Pied Avocet 1, Black-tailed Godwit 36, Spotted Redshank 1.
Meeslouwerplas: Horned Grebe 2, European Greenfinch 2.
Passing: Eurasian Skylark 8 N.
March 6 - Great Cormorant 11, Great Egret 1, Eurasian Spoonbill 1, Greater White-fronted Goose 510, Canada Goose 32, Barnacle Goose 49, Common Shelduck 10, Eurasian Wigeon 3000, Common Pochard 19, Tufted Duck 208, Common Goldeneye 4 male 9 female, Smew 1 female, Common Buzzard 1, Common Kestrel 1, Eurasian Oystercatcher 65, Black-tailed Godwit 66, Spotted Redshank 1, Lesser Black-backed Gull 7, Water Pipit 1.
Meeslouwerplas: Great Crested Grebe 8, Horned Grebe 2, Eurasian Wigeon 250, Common Buzzard 1.
Leidschendammerhout: Great Egret 1, White Stork 7, Eurasian Spoonbill 2, Common Shelduck 8, Gadwall 10, Common Teal 6, Northern Pintail 6 male 2 female, Northern Shoveler 9, Common Buzzard 2, Pied Avocet 1.
March 3 - Greater White-fronted Goose 1, Common Goldeneye 5 male 4 female, Smew 2 female, Pied Avocet 1, Black-tailed Godwit 1, Common Redshank 1, Lesser Black-backed Gull 1.
Meeslouwerplas: Horned Grebe 2.
Leidschendammerhout: White Stork 2.
March 2 - Great Egret 1, Greater White-fronted Goose 22, Canada Goose 28, Lesser Canada Goose 2, Barnacle Goose 28, Egyptian Goose 2, Smew 1 male 1 female, Northern Goshawk 1 2cy, Common Snipe 1, Black-tailed Godwit 32, Spotted Redshank 1, Common Redshank 1, Eurasian Collared Dove 8, Tawny Owl 1, Water Pipit 14, Long-tailed Tit 2.
Meeslouwerplas: Horned Grebe 2 (north side), Common Goldeneye 1 male 1 female, Common Buzzard 2.
Leidschendammerhout: Great Egret 2, White Stork 2, Eurasian Spoonbill 8, Gadwall 14, Common Buzzard 2, Rose-ringed Parakeet 2, Fieldfare 40, Redwing 35, Long-tailed Tit 6, Short-toed Tree Creeper 8, House Sparrow 4, Common Chaffinch 15, Eurasian Siskin 120.

Februari 2011

February 28 - Great Cormorant 7, Mute Swan 1, Barnacle Goose 32, Common Shelduck 14, Eurasian Wigeon 4900, Common Teal 26, Northern Pintail 12 male 8 female, Common Pochard 32, Common Goldeneye 7 male 9 female, Smew 2 female, Common Buzzard 1, Common Kestrel 1, Eurasian Oystercatcher 92, Common Snipe 1, Black-tailed Godwit 1, Lesser Black-backed Gull 10.
Meeslouwerplas: Little Grebe 1, Great Crested Grebe 29, Horned Grebe 2, Great Cormorant 11, Eurasian Wigeon 350, Common Goldeneye 1 female, Spotted Redshank 1, Long-tailed Tit 3.
Leidschendammerhout: Great Egret 2, White Stork 7, Eurasian Spoonbill 2, Common Shelduck 8, Common Teal 6, Northern Pintail 3 male 3 female, Common Buzzard 1.
February 25 - Great Egret 1, Common Shelduck 21, Northern Pintail 17 male 9 female, Tufted Duck 146, Common Goldeneye 5 male 6 female, Smew 1 male 1 female, Common Kestrel 1, Eurasian Oystercatcher 133, Pied Avocet 5, Black-tailed Godwit 14, Eurasian Curlew 35, Lesser Black-backed Gull 10.
Meeslouwerplas: Horned Grebe 2.
Leidschendammerhout: White Stork 3, Eurasian Spoonbill 3, Common Shelduck 8, Gadwall 8, Common Teal 8, Northern Pintail 4 male 1 female, Tufted Duck 10, Common Buzzard 2, Common Wood Pigeon 28, Rose-ringed Parakeet 4, Great Spotted Woodpecker 1.
Passing: Eurasian Spoonbill 2 W.
February 23 - Great Bittern 1 (near path to hide), Grey Heron 2, Eurasian Spoonbill 12, Mute Swan 1, Tundra Bean Goose 3, Greater White-fronted Goose 4200 (5 cr-ringed), Canada Goose 50, Barnacle Goose 80, Egyptian Goose 4, Common Shelduck 105, Eurasian Wigeon 6300, Gadwall 45, Common Teal 108, Northern Pintail 29 male 20 female, Northern Shoveler 42, Common Pochard 28, Tufted Duck 181, Common Goldeneye 4 male 7 female, Smew 2 male 5 female, Goosander 1 male 1 female, Eurasian Sparrowhawk 1, Common Buzzard 2, Common Kestrel 1, Water Rail 1, Eurasian Oystercatcher 83, Black-tailed Godwit 48, Eurasian Curlew 980, Lesser Black-backed Gull 2, Great Black-backed Gull 1, Water Pipit 4. Starrevaart frozen for appr. 50%.
Meeslouwerplas: Little Grebe 2, Great Crested Grebe 35, Great Cormorant 8, Great Egret 7, Gadwall 10, Common Teal 5, Tufted Duck 61, Common Goldeneye 1 male 1 female, Eurasian Coot 75.
Leidschendammerhout: Little Grebe 1, Great Egret 2, White Stork 3, Eurasian Spoonbill 5, Common Buzzard 1, Eurasian Oystercatcher 2, Northern Lapwing 12, Common Wood Pigeon 62.
Passing: Greater White-fronted Goose 650 E 200 W, Eurasian Skylark 2.
February 22 - Great Egret 1, Grey Heron 1, Eurasian Spoonbill 1, Mute Swan 6, Common Goldeneye 3 male 2 female, Smew 1 male 3 female, Common Kestrel 1.
Leidschendammerhout: Great Egret 8, Eurasian Sparrowhawk 1 (hunting Redwings), Eurasian Oystercatcher 20, Pied Avocet 1, Black-tailed Godwit 7, Lesser Black-backed Gull 1, Redwing 5.
Vlietland: Tawny Owl 2 (calling pair).
February 21 - Great Cormorant 8, Great Egret 1, Common Goldeneye 4 male 2 female, Smew 1 male 2 female, Eurasian Oystercatcher 125, Pied Avocet 1, Black-tailed Godwit 95, Spotted Redshank 2, Great Black-backed Gull 1, Rock Pipit 1.
Meeslouwerplas: Little Grebe 3, Horned Grebe 2, Common Goldeneye 3 female, Water Rail 1.
February 20 - Great Crested Grebe 10, Bewick's Swan 2, Greater White-fronted Goose 1100, Red-breasted Goose 1, Common Shelduck 33, Common Teal 20, Northern Pintail 14 male 9 female, Smew 1 female, Common Buzzard 2, Common Kestrel 1, Common Moorhen 4, Eurasian Oystercatcher 74, Black-tailed Godwit 1, Eurasian Curlew 50, Spotted Redshank 1, Lesser Black-backed Gull 1, Great Black-backed Gull 1, Water Pipit 1.
Meeslouwerplas: Horned Grebe 2, Bar-headed Goose 3, Common Goldeneye 1 male 1 female, Water Rail 1.
Leidschendammerhout: Great Egret 2, White Stork 2, Greater White-fronted Goose 15, Greylag Goose 80, Gadwall 15, Common Teal 10, Northern Pintail 3 male 1 female, Tufted Duck 12, Common Buzzard 2, House Sparrow 4.
Passing: Stock Dove 4.
February 19 - Great Egret 1, Eurasian Spoonbill 1, Greater White-fronted Goose 600, Common Shelduck 31, Eurasian Wigeon 4900, Northern Pintail 17 male 11 female, Common Goldeneye 5 male 8 female, Smew 1 male 1 female, Common Buzzard 1, Common Kestrel 1, Eurasian Oystercatcher 138, Black-tailed Godwit 6, Eurasian Curlew 90, Spotted Redshank 2, Lesser Black-backed Gull 4, Great Black-backed Gull 1, Water Pipit 4.
Meeslouwerplas: Horned Grebe 2, Common Teal 15, Common Goldeneye 1 male 1 female, Common Kestrel 1, Long-tailed Tit 4.
Leidschendammerhout: White Stork 2, Eurasian Spoonbill 2.
Passing: Stock Dove 2.
February 17 - Great Cormorant 7, Great Egret 1, Common Shelduck 42, Eurasian Wigeon 4800, Northern Pintail 12 male 10 female, Tufted Duck 193, Common Goldeneye 4 male 6 female, Common Buzzard 2, Common Kestrel 1, Eurasian Oystercatcher 192, Northern Lapwing 300, Common Snipe 1, Black-tailed Godwit 17, Eurasian Curlew 31, Lesser Black-backed Gull 4, Great Black-backed Gull 2.
Meeslouwerplas: Little Grebe 1, Great Crested Grebe 37, Horned Grebe 2, Common Buzzard 2.
Leidschendammerhout: Great Egret 1, White Stork 2 (on artificial nest), Common Shelduck 8, Gadwall 18, Common Teal 14, Northern Pintail 2 male 2 female, Northern Shoveler 6, Common Pochard 6, Tufted Duck 8, Common Buzzard 2, Western Jackdaw 60.
Passing: Eurasian Sparrowhawk 1 W, Common Buzzard 2 W.
February 16 - Great Bittern 1, Dunlin 1, Common Snipe 1.
February 15 - Great Egret 1, Eurasian Spoonbill 1, Common Shelduck 28, Eurasian Wigeon 3800, Common Teal 26, Northern Pintail 10 male 8 female, Common Pochard 34, Tufted Duck 203, Common Goldeneye 7 male 10 female, Common Buzzard 1, Common Kestrel 1, Eurasian Oystercatcher 260, Pied Avocet 1, Eurasian Curlew 2, Spotted Redshank 2, Lesser Black-backed Gull 1, Great Black-backed Gull 1.
Meeslouwerplas: Great Crested Grebe 34, Horned Grebe 2 (sometimes together, sometimes separated by quite a large distance), Common Goldeneye 1 female, Song Thrush 1.
Leidschendammerhout: White Stork 2 (on artificial nest), Common Shelduck 5, Common Teal 8, Northern Pintail 4 male 2 female, Northern Shoveler 7, Common Pochard 6, Tufted Duck 10, Common Wood Pigeon 29.
February 14 - Great Egret 1, Common Goldeneye 7 male 6 female, Common Buzzard 1, Common Kestrel 2, Eurasian Oystercatcher 350, Common Snipe 1, Black-tailed Godwit 5 (on shell island), Spotted Redshank 2, Great Black-backed Gull 1 2nd winter.
Meeslouwerplas: Little Grebe 2, Horned Grebe 1, Common Goldeneye 4 male 2 female, Song Thrush 2.
February 13 - Grey Heron 2, Mute Swan 3, Greater White-fronted Goose 720, Barnacle Goose 189, Egyptian Goose 4, Common Goldeneye 7 male 10 female, Smew 1 male 1 female, Common Kestrel 1, Eurasian Oystercatcher 220 (Hamble Point present again), Black-tailed Godwit 3, Eurasian Curlew 100, Spotted Redshank 2, Lesser Black-backed Gull 1, Water Pipit 24, Common Reed Bunting 2.
Meeslouwerplas: Little Grebe 1, Horned Grebe 2, Mute Swan 2, Bewick's Swan 1, Whooper Swan 1, Common Goldeneye 2 female, Common Buzzard 1, Water Rail 1, Long-tailed Tit 11.
Passing: Barnacle Goose 60 NE, Eurasian Skylark 5.

Horned Grebes, 13-2-2011

February 12 - Great Egret 1.
Meeslouwerplas: Horned Grebe 2, Common Goldeneye 2 male 2 female, Goldcrest 2.
Rietpolder: Little Grebe 3.
February 11 - Great Egret 1, Common Shelduck 37, Northern Pintail 23 male 10 female, Common Pochard 36, Common Goldeneye 4 male 7 female, Smew 1 female, Eurasian Oystercatcher 72, Northern Lapwing 160, Lesser Black-backed Gull 1.
Meeslouwerplas: Little Grebe 1, Great Crested Grebe 12, Horned Grebe 2, Common Goldeneye 1 female.
Leidschendammerhout: Great Egret 1, White Stork 5, Common Shelduck 4, Gadwall 12, Common Teal 22, Tufted Duck 11, Common Buzzard 1, Common Kestrel 1, Common Wood Pigeon 15, Fieldfare 5.
February 9 - Bewick's Swan 1, Smew 1 female.
Meeslouwerplas: Horned Grebe 1.
Passing: Black-tailed Godwit 2.
February 8 - Great Egret 1.
Meeslouwerplas: Horned Grebe 1, Water Rail 2.

February 3 - Great Egret 1, Common Shelduck 51, Northern Pintail 16 male 9 female, Common Goldeneye 5 male 6 female, Smew 1 female, Common Buzzard 2, Eurasian Oystercatcher 3, Northern Lapwing 300, Eurasian Curlew 38, Lesser Black-backed Gull 2, Great Black-backed Gull 4.
Leidschendammerhout: Great Egret 1, White Stork 2, Common Shelduck 2, Gadwall 12, Common Teal 24, Northern Pintail 6 male 4 female, Common Buzzard 2, Rose-ringed Parakeet 1, Fieldfare 20.
Passing: Peregrine Falcon 2 (together at 2:25PM).
February 1 - White Stork 2 (on artificial nest), Bewick's Swan 3, Common Shelduck 87, Eurasian Wigeon 5000, Common Teal 42, Northern Pintail 18 male 10 female, Tufted Duck 259, Common Goldeneye 4 male 6 female, Smew 5 female, Common Buzzard 1, Eurasian Curlew 42, Great Black-backed Gull 2 (adult + 2nd winter).
Meeslouwerplas: Little Grebe 3, Great Crested Grebe 14, Eurasian Wigeon 1600, Gadwall 21, Common Teal 18, Mallard 140, Tufted Duck 55, Eurasian Coot 125.
Leidschendammerhout: Great Egret 1, White Stork 2, Mute Swan 10, Greater White-fronted Goose 1300, Greylag Goose 170, Common Shelduck 2, Common Teal 23, Common Wood Pigeon 14.

Januari 2011

January 31 -
Leidschendammerhout: Pink-footed Goose 6.
January 30 - Bewick's Swan 72, Eurasian Curlew 1072.
January 29 - Great Cormorant 25, Great Bittern 1, Great Egret 1, Bewick's Swan 50 adult 5 juvenile, Tundra Bean Goose 6, Greater White-fronted Goose 500 (4 cr-ringed), Bar-headed Goose 3, Canada Goose 62, Barnacle Goose 4, Egyptian Goose 2, Common Shelduck 90, Eurasian Wigeon 3200, Common Teal 32, Common Pochard 39, Tufted Duck 259, Common Goldeneye 7 male 9 female, Smew 5 male 6 female, Goosander 1 male, Common Buzzard 2, Peregrine Falcon 1 adult (later on hunting in Meeslouwerplas), Eurasian Oystercatcher 2, Northern Lapwing 60, Eurasian Curlew 870, Lesser Black-backed Gull 1, Water Pipit 2, Black Swan 2. Starrevaart frozen for appr. 15%.
Meeslouwerplas: Little Grebe 2, Great Cormorant 6, Great Egret 47 (roost site on the island, record count), Grey Heron 5, Gadwall 40, Common Teal 166, Northern Pintail 30 male 11 female, Common Goldeneye 1 female, Long-tailed Tit 15.
Leidschendammerhout: Grey Heron 6, White Stork 2, Mute Swan 8, Common Shelduck 2, Common Teal 6, Common Wood Pigeon 43, Great Spotted Woodpecker 1, Fieldfare 10.
Passing: Greater White-fronted Goose 38, Stock Dove 1.

Great Egret, 29-1-2011

January 26 - Great Cormorant 10, Great Egret 1, Greater White-fronted Goose 12, Common Shelduck 59, Eurasian Wigeon 2900, Common Teal 27, Northern Pintail 23 male 16 female, Tufted Duck 236, Common Goldeneye 6 male 8 female, Smew 2 male 4 female, Eurasian Oystercatcher 6, Northern Lapwing 160, Spotted Redshank 2.
Leidschendammerhout: White Stork 2 (on artificial nest), Mute Swan 14, Greylag Goose 120, Gadwall 12, Common Teal 23, Northern Pintail 2 male 1 female, Common Buzzard 1, Rose-ringed Parakeet 2.
January 24 - Great Egret 1, Common Shelduck 57, Eurasian Wigeon 1600, Tufted Duck 220, Common Goldeneye 7 male 11 female, Smew 1 female, Common Buzzard 1, Eurasian Oystercatcher 5, Eurasian Curlew 350, Great Black-backed Gull 2.
Leidschendammerhout: White Stork 6, Mute Swan 15, Greater White-fronted Goose 72, Greylag Goose 60, Bar-headed Goose 1, Canada Goose 36, Egyptian Goose 2, Common Shelduck 2, Gadwall 16, Northern Pintail 2 male 1 female, Eurasian Sparrowhawk 1, Common Kestrel 1.
Passing: Greater White-fronted Goose 140.
January 23 - Great Crested Grebe 1, Great Cormorant 4, Mute Swan 1, Bewick's Swan 25 adult 4 juvenile, Tundra Bean Goose 2, Greater White-fronted Goose 850, Greylag Goose 330, Bar-headed Goose 1, Canada Goose 40, Egyptian Goose 1, Common Shelduck 46, Gadwall 10, Common Teal 25, Northern Pintail 24 male 17 female, Northern Shoveler 32 male 10 female, Common Pochard 29 male 26 female, Tufted Duck 241, Common Goldeneye 5 male 7 female, Smew 1 male 5 female, Common Buzzard 1, Eurasian Oystercatcher 4, Northern Lapwing 110, Eurasian Curlew 170, Great Black-backed Gull 1, Water Pipit 2.
Meeslouwerplas: Little Grebe 1, Great Crested Grebe 22, Great Cormorant 1, Greylag Goose 70, Egyptian Goose 6, Eurasian Wigeon 730.
Leidschendammerhout: Great Cormorant 1, White Stork 7, Mute Swan 16, Greater White-fronted Goose 46, Greylag Goose 200, Canada Goose 24, Common Shelduck 1, Common Teal 11, Northern Shoveler 4, Tufted Duck 4, Common Buzzard 1, Common Wood Pigeon 25.
January 21 - Great Cormorant 9, Great Egret 1, Greylag Goose 220, Bar-headed Goose 1, Common Shelduck 77, Common Teal 26, Northern Pintail 27 male 20 female, Common Pochard 39, Common Goldeneye 6 male 10 female, Smew 1 male 7 female, Eurasian Oystercatcher 5, Eurasian Curlew 100, Spotted Redshank 2.
Leidschendammerhout: Little Grebe 1, White Stork 2 (on artificial nest), Canada Goose 12, Common Teal 38, Common Kestrel 1, Common Gull 57, Fieldfare 23.
January 19 - Great Cormorant 11, Greater White-fronted Goose 4, Bar-headed Goose 1, Common Shelduck 56, Eurasian Wigeon 1300, Northern Pintail 26 male 16 female, Northern Shoveler 36, Common Pochard 44, Common Goldeneye 5 male 11 female, Smew 1 female, Common Buzzard 1, Eurasian Oystercatcher 11, Northern Lapwing 160, Eurasian Curlew 50, Spotted Redshank 2, Lesser Black-backed Gull 1.
Leidschendammerhout: White Stork 7 (2 around artificial nest), Mute Swan 13, Gadwall 8, Common Teal 34, Mallard 25, Northern Pintail 1 male 1 female, Northern Shoveler 4, Tufted Duck 12, Common Buzzard 2.
Passing: Greater White-fronted Goose 80 N, Eurasian Curlew 90 N.
January 15 - Great Bittern 1 (flew to north side), Common Shelduck 12, Eurasian Wigeon 500, Common Teal 6, Northern Pintail 16 male 11 female, Northern Shoveler 36, Common Pochard 29, Tufted Duck 318, Common Goldeneye 4 male 7 female, Smew 2 male 3 female, Common Buzzard 2, Eurasian Oystercatcher 4, Northern Lapwing 200, Eurasian Curlew 1.
Leidschendammerhout: White Stork 2, Gadwall 29, Common Teal 20, Northern Pintail 2, Common Buzzard 1.
Passing: Eurasian Curlew 58.
January 9 - Great Egret 1, Northern Pintail 52, Common Goldeneye 3 male 3 female, Common Buzzard 1.
Meeslouwerplas: Little Grebe 1, Eurasian Wigeon >4000, Northern Pintail 2, Common Buzzard 1.
Leidschendammerhout: White Stork 1, Gadwall 8, Common Teal 29, Northern Pintail 3, Northern Shoveler 10, Common Pochard 3, Common Buzzard 1.
Passing: Greater White-fronted Goose 45 NW, Eurasian Curlew 12 S.
January 8 - Grey Heron 3, Common Shelduck 1, Northern Pintail 21 male 14 female, Northern Shoveler 13, Common Pochard 20, Tufted Duck 26, Common Goldeneye 6 male 8 female, Common Buzzard 3, Eurasian Curlew 15, Great Black-backed Gull 3, Eurasian Collared Dove 6, Redwing 2, Common Magpie 6.
Meeslouwerplas: Great Cormorant 14.
Passing: Northern Lapwing 14.
January 3 - Common Buzzard 1. Starrevaart still completely frozen.
Meeslouwerplas: Little Grebe 2, Great Crested Grebe 18, Eurasian Wigeon 4500, Northern Pintail 49, Common Goldeneye 3 female, Smew 1 female.
Leidschendammerhout: Great Egret 1, White Stork 2, Greylag Goose 250, Common Buzzard 2, Common Kestrel 1, Rose-ringed Parakeet 2, Great Spotted Woodpecker 1.

List of observers

The following people have contributed to the overview of 2011 by submitting their observations (and thank you for this!):
Jeroen Arends, Jan Bais, Ab van der Burg, Kees Dijksta, Kees Dijkstra, Ed van Estrik, Gerjon Gelling, Sam Gobin, Cobi Greve, Adri de Groot, E. van Hecke, Chris van Heerden, Hans Hersbach, Gerard de Hoog, Marijn Hoogteijling, Karel Hoogteyling, Tineke Hooijmans, Brian Hunter, Arris Jan van Ekris, Michiel Janssen, Sytze Jongma, Ben Kamps, Hans Keijser, Wim ter Keurs, The�s van Kleffens, Erik de Koning, Derk K�sters, Dick vd Laan, Danny Laponder, Harald Lassner, Andr� Leegwater, Patrick Lut, Jos van der Maarel, Kjell Nilsen, Tim den Outer, Martin Peters, Wouter Plomp, Simon Post, Luuk Punt, Duco Quanjer, Wouter de Quant, August van Rijn, Sjon van Santen, Sjaak Schilperoort, Wim Smit, Rob Tolk, Rinse van der Vliet, Ies Voogd, Max van Waasdijk, Caroline Walta, Tom Zeegers, Gerard van Zeele.

Some sightings were obtained through waarneming.nl