Sightings 2010

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 25 - Greylag Goose 1, Common Kestrel 1.
Vlietland: Little Grebe 15, Great Crested Grebe 21, Great Cormorant 22, Great Bittern 1, Mute Swan 24, Whooper Swan 3, Greater White-fronted Goose 1, Greylag Goose 10, Eurasian Wigeon 1680, Gadwall 95, Common Teal 15, Mallard 860, Northern Pintail 19 male 14 female, Common Pochard 36, Tufted Duck 263, Common Goldeneye 5, Smew 2 female, Hen Harrier 1 female type, Common Buzzard 4, Common Moorhen 4, Eurasian Coot 1510, Eurasian Woodcock 4, Black-headed Gull 500, Common Gull 300, Eurasian Collared Dove 2, Great Spotted Woodpecker 2, Short-toed Tree Creeper 1, Western Jackdaw 80, Common Chaffinch 15, European Greenfinch 10, Eurasian Siskin 8.
Passing: Great Egret 1, Greater White-fronted Goose 9, Eurasian Sparrowhawk 1 SW, Common Wood Pigeon 55, Fieldfare 1.

Great Bittern, 25-12-2010

November 29 - Mute Swan 10, Bewick's Swan 6, Common Shelduck 42, Eurasian Wigeon 2500, Common Teal 26, Northern Pintail 45, Common Goldeneye 1 male 7 female, Smew 1 male 1 female, Common Buzzard 1, Common Kestrel 1, Common Snipe 8, Eurasian Curlew 700. Vogelplas covered for 1/3 with ice.
Meeslouwerplas: Little Grebe 1, Great Crested Grebe 23, Great Egret 3, Eurasian Wigeon 2000, Tufted Duck 130, Common Goldeneye 1 female.
Leidschendammerhout: Great Egret 1, Common Kestrel 2.
Passing: Great Egret 1 NE.
November 28 - Cattle Egret 1.

Cattle Egret, 28-11-2010

Red Phalarope, 6-11-2010

October 30 - Eurasian Sparrowhawk 1.
October 29 - Great Cormorant 15, Great Egret 1, Common Shelduck 28, Northern Pintail 36, Common Goldeneye 3 female, Eurasian Sparrowhawk 1, Common Buzzard 1, Eurasian Oystercatcher 1, Common Snipe 6, Spotted Redshank 24.
Leidschendammerhout: Grey Heron 7, White Stork 8, Common Shelduck 3, Gadwall 31, Common Teal 30, Mallard 12, Northern Pintail 5, Northern Shoveler 8, Common Pochard 2, Tufted Duck 2, Common Kestrel 1, Common Snipe 1, Common Starling 250.
October 28 - Common Shelduck 28, Eurasian Wigeon 1300, Northern Pintail 36, Northern Shoveler 380, Common Pochard 20, Tufted Duck 165, Common Goldeneye 2 male 3 female 1 juvenile, Common Buzzard 2, Common Snipe 9, Eurasian Curlew 45, Spotted Redshank 27.
Leidschendammerhout: Canada Goose 32, Common Buzzard 1, Common Kestrel 2.
Passing: Peregrine Falcon 1 NE.
October 25 - Bewick's Swan 6, Eurasian Sparrowhawk 1, Common Buzzard 2, Common Snipe 20, Eurasian Curlew 20, Spotted Redshank 32.
Meeslouwerplas: Water Rail 1, Common Kingfisher 1.
October 24 - Great Bittern 1, Common Shelduck 25, Northern Pintail 16, Common Goldeneye 1 male 3 female, Eurasian Oystercatcher 1, Common Snipe 9, Eurasian Curlew 28, Spotted Redshank 32.
October 21 - Great Crested Grebe 15, Great Cormorant 15, Greater White-fronted Goose 91, Greylag Goose 311, Canada Goose 23, Common Shelduck 19, Common Teal 15, Northern Pintail 20, Northern Shoveler 270, Common Goldeneye 3, Common Kestrel 1, Northern Lapwing 126, Common Snipe 5, Eurasian Curlew 387, Spotted Redshank 32, Great Black-backed Gull 1.
Leidschendammerhout: Little Grebe 2, Grey Heron 7, White Stork 2, Common Teal 33, Common Buzzard 2, Common Kestrel 2.
Passing: Fieldfare 90 S (1 group).
October 17 - Bewick's Swan 3.

Bewick's Swan, 17-10-2010 (Photo © Gerard van Zeele)

September 29 - Great Cormorant 52, Eurasian Spoonbill 24, Common Goldeneye 1 juvenile, European Golden Plover >300, Eurasian Curlew 360.
Passing: Red Kite 2 S.
September 28 - Great Egret 2, Eurasian Spoonbill 7, Osprey 1 (hunting in the afternoon, diving 4x without success), Spotted Redshank 22, Northern Chiffchaff 4, Long-tailed Tit 6.
Passing: Peregrine Falcon 1.
September 27 - Great Egret 1, Eurasian Spoonbill 4, Common Goldeneye 2 juvenile, Barn Swallow 6.
September 18 - Little Grebe 1, Black-necked Grebe 2, Great Cormorant 55, Eurasian Spoonbill 4, Barnacle Goose 28, Northern Pintail 13, Common Goldeneye 1, European Golden Plover 30, Eurasian Curlew 114, Spotted Redshank 26.
September 16 - Little Grebe 1, Black-necked Grebe 1, Great Cormorant 40, Great Egret 2, Eurasian Spoonbill 2, Northern Pintail 7, Common Buzzard 2, Common Kestrel 1, Pied Avocet 1, Ruff 1, Bar-tailed Godwit 1, Eurasian Curlew 38, Spotted Redshank 35, Common Greenshank 2, Black Tern 3, Sand Martin 1, Barn Swallow 24, Common House Martin 70, Northern Chiffchaff 2 (near hide), Black Swan 1.
September 13 - Little Grebe 1, Black-necked Grebe 2, Great Cormorant 49, Great Egret 1, Grey Heron 5, Greater White-fronted Goose 21, Common Shelduck 12, Eurasian Wigeon 105, Gadwall 136, Common Teal 84, Northern Pintail 11, Garganey 2, Northern Shoveler 433, Common Pochard 106, Tufted Duck 167, Common Buzzard 2, Common Kestrel 1, Ruff 3, Eurasian Curlew 78, Spotted Redshank 22, Black Tern 2, Barn Swallow 20, Common House Martin 10.
Meeslouwerplas: Water Rail 1, Blackcap 1, Northern Chiffchaff 3.
September 12 - Little Grebe 2, Black-necked Grebe 1, Great Cormorant 39, Eurasian Spoonbill 7, Greylag Goose 389, Canada Goose 7, Barnacle Goose 115, Eurasian Wigeon 14, Gadwall 215, Common Teal 83, Northern Pintail 27, Garganey 2, Northern Shoveler 510, Common Pochard 111 male 53 female, Tufted Duck 195, Western Marsh Harrier 1 female, Eurasian Sparrowhawk 1, Common Buzzard 1, Common Kestrel 1, Eurasian Oystercatcher 7, European Golden Plover 150, Northern Lapwing 314, Ruff 3, Eurasian Curlew 85, Spotted Redshank 18 adult 8 juvenile, Black Tern 4.
Leidschendammerhout: White Stork 12, Gadwall 6, Mallard 30, Northern Shoveler 22, Common Buzzard 1, Common Kestrel 3, Common Kingfisher 1, Blackcap 1, Northern Chiffchaff 10, Long-tailed Tit 10, Blue Tit 25 (1 group), Short-toed Tree Creeper 1, Common Magpie 6, Western Jackdaw 38, Carrion Crow 14, European Goldfinch 2.
September 11 - Common Buzzard 2, Common Snipe 19, Long-tailed Tit 7.
September 9 - Great Egret 2, Eurasian Spoonbill 5, Barnacle Goose 38, European Golden Plover 500, Eurasian Curlew 300, Black Tern 5.
September 8 - Little Grebe 2, Great Egret 2, Northern Pintail 6, Western Marsh Harrier 1 female, Common Buzzard 1, Common Kestrel 1, European Golden Plover 400, Ruff 1, Eurasian Curlew 410, Spotted Redshank 19, Black Tern 6, Barn Swallow 50, Whinchat 1.
Meeslouwerplas: Blackcap 2.
Passing: Eurasian Sparrowhawk 3 SW.
September 4 - Great Egret 3, Eurasian Spoonbill 9, Barnacle Goose 70, Egyptian Goose 137, Gadwall 157, Common Teal 48, Northern Pintail 5, Northern Shoveler 284, Common Pochard 88 male 30 female, Common Kestrel 1, Eurasian Hobby 1, Water Rail 1, European Golden Plover 580, Ruff 5, Common Snipe 14, Spotted Redshank 10, Common Kingfisher 1.
Meeslouwerplas: Blackcap 2.
Hofpolder: Common Kingfisher 1 (near marina).
Leidschendammerhout: Greylag Goose 340, Common Buzzard 8, Common Kingfisher 1, European Goldfinch 8.
Passing: Great Cormorant 5 SW, White Stork 15 (local birds), Barnacle Goose 100, Common Buzzard 2, Common Kestrel 1, Tree Pipit 1, White Wagtail 4, Common Chaffinch 1.
September 3 - Great Crested Grebe 13, Great Cormorant 49, Little Egret 1 (roosting on mud flat), Great Egret 2, Eurasian Spoonbill 28, Mute Swan 5, Bar-headed Goose 4, Canada Goose 128, Lesser Canada Goose 1, Barnacle Goose 227, Egyptian Goose 143, Eurasian Wigeon 32, Common Teal 95, Northern Pintail 3, Common Pochard 56, Western Marsh Harrier 1 female, Water Rail 1, European Golden Plover 600, Ruff 5, Common Snipe 8, Eurasian Curlew 125, Spotted Redshank 13 adult 1 juvenile, Green Sandpiper 2, Common Tern 2, Common Kingfisher 1, Barn Swallow 80.
Meeslouwerplas: Northern Chiffchaff 2, Long-tailed Tit 7.
Leidschendammerhout: White Stork 2, Greylag Goose 90, Eurasian Sparrowhawk 2, Common Buzzard 2.
Passing: Common Starling 1100 SW (roost migration).

Little Egret, 3-9-2010

August 31 - Great Cormorant 75, Garganey 1, Ruff 1, Spotted Redshank 17 adult 11 juvenile, Common Greenshank 2, Green Sandpiper 1, Wood Sandpiper 1, Black Tern 3, Barn Swallow 50, Black Swan 2.
Passing: Eurasian Sparrowhawk 1 SW.
August 28 - Eurasian Spoonbill 14, Barnacle Goose 210, Egyptian Goose 78, Common Pochard 46 male 25 female, Tufted Duck 58, Ruff 1, Eurasian Curlew 330, Spotted Redshank 13, Common Greenshank 2, Green Sandpiper 1, Wood Sandpiper 1, Common Kingfisher 1, Willow Warbler 1.
Meeslouwerplas: Barn Swallow 30, Song Thrush 1, Common Whitethroat 2, Blackcap 1.
Leidschendammerhout: Barn Swallow 25, European Goldfinch 1.
August 27 - Great Crested Grebe 10, Black-necked Grebe 2, Great Cormorant 24, Eurasian Spoonbill 15, Mute Swan 6, Barnacle Goose 6, Common Shelduck 13, Common Teal 24, Garganey 1, Northern Shoveler 195, Common Pochard 53, Common Goldeneye 1, Eurasian Oystercatcher 16, Pied Avocet 10, European Golden Plover 180, Ruff 2, Common Snipe 16, Black-tailed Godwit 7, Eurasian Curlew 72, Spotted Redshank 15, Common Greenshank 1, Common Sandpiper 1, Great Black-backed Gull 1, Barn Swallow 20, Common House Martin 200.
Leidschendammerhout: Common Buzzard 2, Eurasian Hobby 1, Barn Swallow 25, Common House Martin 8, European Goldfinch 20.
August 22 - Eurasian Spoonbill 20, Common Buzzard 1, Common Kestrel 1, Common Ringed Plover 1, Dunlin 4, Eurasian Curlew 580, Black-headed Gull 3200, Lesser Black-backed Gull 83, European Herring Gull 110, Common Tern 83.
August 21 - Black-necked Grebe 1 juvenile, Eurasian Sparrowhawk 1, European Golden Plover 600, Little Stint 1, Dunlin 2, Eurasian Curlew 60, Great Black-backed Gull 1.
Passing: Blue-headed Wagtail 2 SW.
August 20 - Great Crested Grebe 12, Black-necked Grebe 2 juvenile, Great Cormorant 73, Eurasian Spoonbill 21, Mute Swan 12, Greylag Goose 1100, Bar-headed Goose 4 + 5 juvenile, Canada Goose 462, Barnacle Goose 183, Egyptian Goose 207, Common Shelduck 20, Common Teal 37, Common Pochard 26, Common Kestrel 2, Water Rail 1, Pied Avocet 8, Little Ringed Plover 1, Common Ringed Plover 4, European Golden Plover 600, Northern Lapwing 1300, Dunlin 6, Ruff 4, Common Snipe 38, Black-tailed Godwit 6, Whimbrel 1, Eurasian Curlew 131, Spotted Redshank 13, Common Redshank 1, Common Greenshank 3, Green Sandpiper 4, Wood Sandpiper 2, Common Sandpiper 9, Ruddy Turnstone 1, Common Tern 20, Stock Dove 6.
Leidschendammerhout: White Stork 1, Common Buzzard 2, Whinchat 1, European Goldfinch 4.
Passing: Meadow Pipit 4 SW.
August 18 - Great Crested Grebe 11, Black-necked Grebe 1 juvenile, Great Cormorant 31, White Stork 1, Eurasian Spoonbill 21, Mute Swan 11, Barnacle Goose 46, Common Shelduck 31, Common Teal 47, Northern Pintail 1, Garganey 2, Common Goldeneye 1, Western Marsh Harrier 1 female, Common Buzzard 2, Common Kestrel 1, Water Rail 2, Pied Avocet 5, Little Ringed Plover 2, Common Ringed Plover 4, European Golden Plover 425, Dunlin 7, Ruff 8, Common Snipe 30, Black-tailed Godwit 5, Eurasian Curlew 90, Spotted Redshank 12, Common Redshank 4, Common Greenshank 4, Green Sandpiper 6, Wood Sandpiper 6, Common Sandpiper 7, Caspian Tern 2 (at 9:20 AM over the lake, disappearing in eastern direction), Barn Swallow 40, Common House Martin 90, European Pied Flycatcher 1 (south-west end), Black Swan 1.
Dead animals collected: Greylag Goose 1, Common Shelduck 1 juvenile, Eurasian Coot 1, Ruff 1, Common Redshank 1, Wood Sandpiper 1, Black-headed Gull 6, Common Tern 1 juvenile.
Meeslouwerplas: Western Marsh Harrier 1 juvenile, Common Buzzard 2.
Leidschendammerhout: Canada Goose 34, Common Buzzard 3.
Passing: Whimbrel 1.
August 16 - Black-necked Grebe 1 juvenile, Great Cormorant 49, White Stork 1, Eurasian Spoonbill 19, Mute Swan 17, Common Shelduck 35, Eurasian Wigeon 8, Common Teal 35, Garganey 1, Eurasian Coot 535, Pied Avocet 8, European Golden Plover 300, Northern Lapwing 1800, Ruff 11, Common Snipe 14, Eurasian Curlew 2, Spotted Redshank 13, Common Redshank 6, Common Greenshank 3, Green Sandpiper 6, Wood Sandpiper 3, Common Sandpiper 12, White Wagtail 1, Black Swan 1.
Leidschendammerhout: Greylag Goose 160, Common Buzzard 2, Whinchat 1, Northern Wheatear 1, European Goldfinch 25.
August 14 - Great Crested Grebe 14, Great Cormorant 65, Eurasian Spoonbill 23, Canada Goose 37, Garganey 2, Common Buzzard 1, Pied Avocet 5, Little Ringed Plover 1, Common Ringed Plover 2, European Golden Plover 650, Ruff 10, Common Snipe 16, Black-tailed Godwit 26, Eurasian Curlew 42, Spotted Redshank 12, Common Redshank 4, Green Sandpiper 8, Wood Sandpiper 6, Common Sandpiper 9.
Leidschendammerhout: White Stork 1, Common Buzzard 1, Barn Swallow 35.
Passing: White Stork 2 E.
August 13 - Black-necked Grebe 2 juvenile, Great Cormorant 47, Eurasian Spoonbill 32, Mute Swan 20, Greylag Goose 160, Lesser Canada Goose 1, Barnacle Goose 59, Common Shelduck 51, Eurasian Wigeon 1, Common Teal 32, Northern Pintail 2, Garganey 1, Common Buzzard 2, Common Kestrel 1, Water Rail 3, Pied Avocet 9, Little Ringed Plover 1 adult 3 juvenile, Common Ringed Plover 3, European Golden Plover 29, Dunlin 1, Ruff 9, Common Snipe 20, Black-tailed Godwit 16, Whimbrel 1, Spotted Redshank 10, Common Redshank 3, Green Sandpiper 10, Wood Sandpiper 10, Common Sandpiper 8, Black Tern 1, Sand Martin 11, Barn Swallow 40, Common House Martin 35, White Wagtail 5, Common Starling 1500 (roosting site).
Passing: White Stork 1, Eurasian Hobby 1 SW.
August 11 - Great Cormorant 69, Eurasian Spoonbill 37, Greylag Goose 220, Egyptian Goose 18, Eurasian Wigeon 1, Garganey 4, Western Marsh Harrier 1 female, Water Rail 2, Dunlin 4, Wood Sandpiper 8, Common Tern 150, Common Kingfisher 1.
Passing: Eurasian Oystercatcher 40 SW.
August 9 - Great Crested Grebe 12, Black-necked Grebe 1 juvenile, Great Cormorant 74, Eurasian Spoonbill 34, Mute Swan 24, Common Shelduck 36, Common Teal 37, Garganey 1, Western Marsh Harrier 1 female, Eurasian Sparrowhawk 1, Pied Avocet 7, Common Ringed Plover 3, European Golden Plover 75, Ruff 9, Common Snipe 22, Black-tailed Godwit 24, Eurasian Curlew 54, Spotted Redshank 9, Common Redshank 4, Common Greenshank 8, Green Sandpiper 11, Wood Sandpiper 4, Common Sandpiper 8.
Meeslouwerplas: Common Kingfisher 2.
Leidschendammerhout: White Stork 3, Greylag Goose 200.
August 8 - Black-necked Grebe 2, Great Cormorant 63, Eurasian Spoonbill 20, Common Shelduck 36, Common Buzzard 2, Eurasian Oystercatcher 31, Pied Avocet 5, Common Ringed Plover 6, Ruff 14, Common Snipe 11, Black-tailed Godwit 34, Spotted Redshank 11, Common Redshank 6, Green Sandpiper 7, Wood Sandpiper 9, Common Sandpiper 9, White Wagtail 1.
August 7 - Black-necked Grebe 2 juvenile, Great Cormorant 50, Eurasian Spoonbill 33, Greater White-fronted Goose 1, Canada Goose 22, Barnacle Goose 9, Common Shelduck 49, Gadwall 353, Common Teal 48, Mallard 180, Northern Pintail 2, Garganey 5, Northern Shoveler 221, Water Rail 1, Eurasian Coot 570, Pied Avocet 4, Little Ringed Plover 3, Common Ringed Plover 15, European Golden Plover 1, Dunlin 1, Ruff 17, Common Snipe 24, Spotted Redshank 14, Common Redshank 5, Green Sandpiper 20, Wood Sandpiper 8, Yellow-legged Gull 1 adult, Barn Swallow 40, Common Magpie 5.
Passing: Northern Goshawk 1 adult male SW.
August 5 - Black-necked Grebe 1 juvenile, Great Cormorant 79, Great Egret 1, White Stork 1, Eurasian Spoonbill 58, Garganey 5, Western Marsh Harrier 1 female, Eurasian Sparrowhawk 1, Common Buzzard 4, Pied Avocet 7, Little Ringed Plover 1, European Golden Plover 16, Little Stint 2, Dunlin 1, Ruff 16, Common Snipe 5, Black-tailed Godwit 17, Spotted Redshank 14, Common Redshank 3, Green Sandpiper 8, Wood Sandpiper 2, Common Sandpiper 3.
Passing: White Stork 1 W.
August 3 - Great Crested Grebe 18, Great Cormorant 72, Eurasian Spoonbill 59, Pink-footed Goose 1 adult, Greylag Goose 120, Canada Goose 11, Common Teal 20, Garganey 11, Western Marsh Harrier 1 female, Common Buzzard 2, Common Kestrel 1 male 1 female, Spotted Crake 1 (Western part of Kniplaan side), Eurasian Oystercatcher 208, Pied Avocet 5, Little Ringed Plover 1, Dunlin 8, Ruff 12, Common Snipe 9, Green Sandpiper 8, Wood Sandpiper 12, Black-headed Gull 1600, Lesser Black-backed Gull 40, Common Tern 208, Barn Swallow 20.

Pink-footed Goose, 3-8-2010

July 31 - Great Crested Grebe 1, Great Egret 1, Grey Heron 12, Eurasian Spoonbill 64, Pied Avocet 5, Common Ringed Plover 2, Curlew Sandpiper 1, Dunlin 1, Ruff 6, Common Snipe 10, Spotted Redshank 14, Common Redshank 2, Green Sandpiper 3, Wood Sandpiper 1, Common Sandpiper 9.
Dead animals collected: Common Shelduck 1 juvenile, Mallard 1, Northern Shoveler 1, Tufted Duck 1, Eurasian Coot 1, Eurasian Oystercatcher 1, Wood Sandpiper 1, Black-headed Gull 5 adult 5 juvenile, Lesser Black-backed Gull 1, European Herring Gull 1 juvenile, Common Tern 1 adult.
July 30 - Black-necked Grebe 1 adult 1 juvenile, Great Cormorant 75, Great Egret 1, Grey Heron 10, Eurasian Spoonbill 62, Greylag Goose 1100, Northern Pintail 1 male, Eurasian Oystercatcher 36, Pied Avocet 5, European Golden Plover 20, Dunlin 1, Ruff 5, Common Snipe 6, Black-tailed Godwit 39, Whimbrel 1, Eurasian Curlew 2, Spotted Redshank 12, Common Redshank 7, Common Greenshank 1, Green Sandpiper 8, Wood Sandpiper 3, Common Sandpiper 6, Great Spotted Woodpecker 1.
Leidschendammerhout: White Stork 4.
July 27 - Great Crested Grebe 23, Black-necked Grebe 1 adult + 3 juvenile, Great Cormorant 68, Great Egret 1, Grey Heron 15, Eurasian Spoonbill 73, Common Goldeneye 1, Eurasian Oystercatcher 4, Little Ringed Plover 1, Curlew Sandpiper 1, Dunlin 1, Ruff 7, Common Snipe 3, Black-tailed Godwit 36, Spotted Redshank 12, Common Redshank 2, Green Sandpiper 8, Wood Sandpiper 2, Common Sandpiper 10, Common Swift >70.
Leidschendammerhout: White Stork 2 + 3 juvenile, European Goldfinch 20, Common Linnet 5.
July 26 - Black-necked Grebe 2 juvenile, Great Cormorant 64, Great Egret 1, Eurasian Spoonbill 58, Mute Swan 49, Water Rail 1, Eurasian Oystercatcher 37, Common Ringed Plover 2, Little Stint 1, Curlew Sandpiper 1, Dunlin 1, Ruff 3, Common Snipe 3, Black-tailed Godwit 40, Whimbrel 1, Spotted Redshank 9, Common Redshank 8, Green Sandpiper 5, Wood Sandpiper 3, Common Sandpiper 10, Great Spotted Woodpecker 2.
Leidschendammerhout: White Stork 5, Common Buzzard 1, Stock Dove 2.
July 25 - Black-necked Grebe 2 juvenile, Great Egret 1, Eurasian Spoonbill 45, Greylag Goose 190 (10 cr-ringed), Garganey 2, Common Goldeneye 1, Water Rail 2, Spotted Crake 1 (Kniplaan side), Eurasian Coot 341, Pied Avocet 2, Common Ringed Plover 3, Curlew Sandpiper 1, Dunlin 2, Ruff 5 male, Black-tailed Godwit 41, Spotted Redshank 7, Common Redshank 5, Common Greenshank 3, Green Sandpiper 10, Wood Sandpiper 4, Common Sandpiper 8, Great Black-backed Gull 1, Common Swift 12, Great Spotted Woodpecker 1, Common House Martin 10, Bluethroat 1, Sedge Warbler 1, Marsh Warbler 1, European Goldfinch 1.
Dead animals collected: Eurasian Spoonbill 1 adult, Common Shelduck 4 juvenile, Gadwall 2, Mallard 3, Northern Shoveler 2, Tufted Duck 2, Eurasian Coot 4, Northern Lapwing 1, Spotted Redshank 1, Common Redshank 1, Black-headed Gull 6, Lesser Black-backed Gull 1 adult.
Meeslouwerplas: Black Swan 1.
Leidschendammerhout: White Stork (3 juveniles on nest), Common Buzzard 1, Pheasant 4 male 1 female, Northern Lapwing 57, Rose-ringed Parakeet 2, Marsh Warbler 1, European Reed Warbler 2, Willow Warbler 1, Common Starling 40, European Goldfinch 3, Common Reed Bunting 1 male 1 female.
Passing: Whimbrel 1, Stock Dove 1.
July 24 - Black-necked Grebe 1 juvenile, Great Cormorant 60, Eurasian Spoonbill 57, Western Marsh Harrier 2 female, Eurasian Hobby 1, Eurasian Oystercatcher 320, Pied Avocet 6, Little Ringed Plover 2 adult 1 juvenile 1 pul, Common Ringed Plover 1, Ruff 2 male, Common Snipe 4, Black-tailed Godwit 130, Spotted Redshank 6, Common Redshank 2, Common Greenshank 1, Green Sandpiper 5, Wood Sandpiper 2, Common Sandpiper 6, Common Tern 530, Common Swift 1, Barn Swallow 400, Savi's Warbler 1. Panic due to 2 dogs chasing ducks on the mud flat.
Passing: Great Egret 1 SW, Grey Heron 6 SW.
July 23 - Black-necked Grebe 1 juvenile, Great Cormorant 55, Great Egret 1, Eurasian Spoonbill 56, Mute Swan 45, Eurasian Oystercatcher 60, Pied Avocet 3, Ruff 4, Common Snipe 3, Black-tailed Godwit 88, Spotted Redshank 8, Common Redshank 9, Green Sandpiper 2, Common Sandpiper 7, Common Tern 273.
July 21 - Great Crested Grebe 21, Black-necked Grebe 1 + 3 juvenile, Great Cormorant 44, Eurasian Spoonbill 50, Mute Swan 34, Greater White-fronted Goose 1, Barnacle Goose 3, Common Teal 3, Garganey 1, Eurasian Oystercatcher 16, Pied Avocet 4, Little Ringed Plover 3, European Golden Plover 6, Red Knot 2, Little Stint 5, Ruff 3, Common Snipe 2, Black-tailed Godwit 57, Spotted Redshank 13, Common Redshank 9, Green Sandpiper 5, Wood Sandpiper 3, Common Sandpiper 14, Ruddy Turnstone 1, Common Tern 100, Common Kingfisher 1, Great Spotted Woodpecker 1, Common Grasshopper Warbler 2, Sedge Warbler 13, Marsh Warbler 1, European Reed Warbler 16, Common Reed Bunting 7, Black Swan 1.
Leidschendammerhout: White Stork 2 adult 3 juvenile (fledged today).
Passing: Grey Heron 7, Peregrine Falcon 1.
July 20 - Little Grebe 2, Black-necked Grebe 1 adult 3 juvenile, Great Cormorant 48, Eurasian Spoonbill 24, Mute Swan 50, Common Teal 3, Garganey 1, Pied Avocet 1, Little Ringed Plover 3, European Golden Plover 50, Little Stint 2, Dunlin 1, Ruff 3, Common Snipe 2, Black-tailed Godwit 47, Whimbrel 2, Spotted Redshank 7, Common Redshank 4, Green Sandpiper 3, Wood Sandpiper 1, Common Sandpiper 7.
July 19 - Black-necked Grebe 1 adult 3 juvenile, Great Cormorant 50, Eurasian Spoonbill 43, Mute Swan 47, Greylag Goose 450 (12 cr-ringed), Eurasian Oystercatcher 52, European Golden Plover 21, Ruff 2, Common Snipe 1, Black-tailed Godwit 52, Spotted Redshank 6, Common Redshank 8, Green Sandpiper 5, Common Sandpiper 8, Common Tern 104, European Turtle Dove 1.
Leidschendammerhout: White Stork 1 adult 3 juvenile, Western Marsh Harrier 1 male (hunting), Common Buzzard 1, Common Swift 60.
July 18 - Great Cormorant 45, Eurasian Spoonbill 54, Eurasian Oystercatcher 127, Ruff 1, Common Snipe 1, Black-tailed Godwit 108, Spotted Redshank 2, Common Greenshank 2, Green Sandpiper 2, Common Sandpiper 2, Black-headed Gull 355, Common Tern 58, Hermine 1 (Duinwaterpad south of hide).
Dead animals collected: Great Cormorant 1, goose spec. 1, Greylag Goose 1, Common Shelduck 1, Mallard 3, Garganey 1, Tufted Duck 2, Eurasian Coot 2, Little Ringed Plover 4, Northern Lapwing 1, Common Snipe 1, Common Redshank 2, Black-headed Gull 1 adult 17 juvenile.
Leidschendammerhout: White Stork 2, Greylag Goose 119, Northern Shoveler 1 female, Northern Chiffchaff 3, European Goldfinch 2.
July 15 - Great Crested Grebe 23, Black-necked Grebe 2 adult 3 juvenile, Great Cormorant 30, Eurasian Spoonbill 52, Mute Swan 48, Eurasian Coot 460, Eurasian Oystercatcher 16, Little Ringed Plover 3, Ruff 3 male, Black-tailed Godwit 23, Spotted Redshank 12, Common Redshank 10, Common Greenshank 19 (one group), Green Sandpiper 4, Wood Sandpiper 1, Common Sandpiper 9, Lesser Black-backed Gull 26, Common Tern 32, European Turtle Dove 1.
Leidschendammerhout: White Stork 4 adult 3 juvenile, Common Buzzard 1, Common Swift 4, Sand Martin 2, Barn Swallow 50, Common House Martin 4.

European Turtle Dove, 15-7-2010 (Photo © Adri de Groot)

June 30 - Great Cormorant 32, White Stork 1, Eurasian Spoonbill 30, Mute Swan 56, Eurasian Wigeon 4, Common Teal 16, Pied Avocet 24, Black-tailed Godwit 35, Eurasian Curlew 4, Spotted Redshank 5, Common Redshank 8, Green Sandpiper 1, Common Sandpiper 1, Bluethroat 4, Common Whitethroat 4, Black Swan 1.
Dead animals collected: Mallard 1 pul, Eurasian Coot 1, Black-headed Gull 1 adult 4 juvenile (1 cr-ringed), European Herring Gull 1, Common Tern 1, Common Rudd 2, Common Carp 1, Northern Pike 2.
Leidschendammerhout: White Stork 2 + 3 young.
June 29 - Great Cormorant 38, White Stork 2, Eurasian Spoonbill 37 (1 cr-ringed), Mute Swan 39, Eurasian Wigeon 2 male 2 female, Gadwall 488, Common Teal 13, Mallard 136, Garganey 1 female, Northern Shoveler 47, Eurasian Oystercatcher 223, Pied Avocet 21, Ruff 1 male, Black-tailed Godwit 360 + 82 juvenile, Eurasian Curlew 93, Spotted Redshank 5, Common Redshank 41 + 38 juvenile, Black-headed Gull 1200, Common Gull 24, Lesser Black-backed Gull 42, Common Tern 34, Sand Martin 40, Barn Swallow 380, Bluethroat 2 male, Black Swan 1, Hermine 1.
Meeslouwerplas: Common Cuckoo 1 male.

Eurasian Spoonbill, 29-6-2010 (Photo © Adri de Groot)

May 31 - Mute Swan 11, Bluethroat 4 singing, Black Swan 2.
Leidschendammerhout: Common Grasshopper Warbler 1.
May 29 - Great Crested Grebe 10, Mute Swan 79, Eurasian Sparrowhawk 1, Pied Avocet 1, Black-tailed Godwit 6, Bar-tailed Godwit 1, Eurasian Curlew 49, Common Redshank 1, Mediterranean Gull 1 2cy, Lesser Black-backed Gull 38, Common Tern 26.
Meeslouwerplas: Common Cuckoo 2, Bluethroat 1 male 1 female.
Leidschendammerhout: White Stork 4 + 3 young, Common Shelduck 2 + 2 pulli, Common Buzzard 1, Common Kestrel 1, Eurasian Hobby 1, Black-tailed Godwit 8, Common Redshank 1, Marsh Warbler 3, Common Reed Bunting 5.
Passing: Stock Dove 1 E, Common Cuckoo 1 SW.
May 28 - Red-crested Pochard 1 male 1 female.
May 27 - Great Cormorant 3, Eurasian Spoonbill 1, Mute Swan 60, Common Shelduck 18, Eurasian Wigeon 1 male 1 female, Gadwall 89, Western Marsh Harrier 1 female, Eurasian Oystercatcher 31, Black-tailed Godwit 6, Little Gull 1 2cy, Common Tern 25, Common Swift 80, Great Spotted Woodpecker 1, Barn Swallow 10, Least Weasel 1 (on path to hide).
Meeslouwerplas: Common Cuckoo 1 male.
Leidschendammerhout: White Stork 2 + 3 young, Common Shelduck 4 + 2 pulli, Gadwall 35, Mallard 25, Tufted Duck 9, Common Buzzard 1, Black-tailed Godwit 3, Common Tern 2, Rose-ringed Parakeet 4, Common Cuckoo 2 male, Common Swift 8, Marsh Warbler 6, Common Reed Bunting 3.
May 26 - Mute Swan 55, Greylag Goose 163, Common Shelduck 4, Western Marsh Harrier 1 male 1 female, Common Buzzard 3, Pied Avocet 3, Bar-tailed Godwit 1, Eurasian Curlew 38, Common Greenshank 1, Common Cuckoo 1, Common Swift 800 (compact group at south-side, also some migration north), Sand Martin 2, Barn Swallow 100, Common House Martin 40, Bluethroat 1 female, Common Whitethroat 2.
Meeslouwerplas: Common Cuckoo 1 male.
Leidschendammerhout: White Stork 1 + 2 young, Egyptian Goose 2, Common Shelduck 3, Northern Shoveler 2, Tufted Duck 9, Western Marsh Harrier 1 female, Common Buzzard 2, Black-tailed Godwit 10, Rose-ringed Parakeet 2, Great Spotted Woodpecker 2, Common Nightingale 1, Marsh Warbler 1, European Reed Warbler 1, Common Reed Bunting 1.
Passing: Barnacle Goose 6 NE, Stock Dove 2, Common Cuckoo 3 SW.
May 25 - Great Cormorant 3, Eurasian Spoonbill 1, Mute Swan 49, Eurasian Wigeon 2 male 1 female, Gadwall with 3 downy young, Common Buzzard 1, Eurasian Oystercatcher 17, Pied Avocet 3, Black-tailed Godwit 12, Eurasian Curlew 15, Common Redshank 1, Common Tern 42, Black Tern 2, Common Swift 22, Marsh Warbler 2, Common Whitethroat 2.
Meeslouwerplas: Common Buzzard 1, Common Cuckoo 2 male 1 female.
Leidschendammerhout: White Stork 1 + 3 young (on artificial nest), Gadwall 87, Common Buzzard 1, Black-tailed Godwit 6, Rose-ringed Parakeet 1, Common Swift 2, Great Spotted Woodpecker 1, Barn Swallow 1.
Passing: White Stork 3 SW 2 E.
May 24 - Great Crested Grebe 10, White Stork 5 (2 with at least 2 young on artificial nest at Oostvlietweg, 1 on artificial nest at Kniplaan), Eurasian Spoonbill 1, Mute Swan 95, Egyptian Goose 4, Common Shelduck 6, Eurasian Wigeon 2 male 1 female, Gadwall 135, Northern Shoveler 6 male, Red-crested Pochard 1 male, Common Pochard 7 male 3 female, Tufted Duck 28 male 9 female, Western Marsh Harrier 1 male, Eurasian Oystercatcher 6, Black-tailed Godwit 20, Eurasian Curlew 20, Common Redshank 2, Common Sandpiper 2, Black-headed Gull 500, Common Gull 2, Lesser Black-backed Gull 20, Common Tern 30 (14 nests), Black Tern 1, Eurasian Collared Dove 6, Common Cuckoo 1, Bluethroat 1 male 1 female, Common Grasshopper Warbler 2, Savi's Warbler 1 (south east side), Sedge Warbler 18 singing, Marsh Warbler 11 singing, European Reed Warbler 41 singing, Common Whitethroat 4 singing, Garden Warbler 2, Long-tailed Tit 2, European Greenfinch 6, Common Reed Bunting 15 singing.
Leidschendammerhout: Common Buzzard 3, White Wagtail 1, European Robin 2, Common Nightingale 1, Common Blackbird 14, Marsh Warbler 1, European Reed Warbler 1, Garden Warbler 5, Blackcap 8, Spotted Flycatcher 1 singing, Short-toed Tree Creeper 6 (including 2 young being fed).
Passing: Stock Dove 1.
May 23 - Eurasian Spoonbill 7, Gadwall 45, Common Teal 2, Black-tailed Godwit 22, Common Sandpiper 9, Common Tern 29, Black Tern 3, Common Cuckoo 2.
May 20 - Great Crested Grebe 10, Black-necked Grebe 1, Great Cormorant 6, Eurasian Spoonbill 1, Mute Swan 32, Egyptian Goose 4, Common Shelduck 20, Eurasian Wigeon 2 male 1 female, Gadwall 68, Common Buzzard 2, Eurasian Oystercatcher 39, Pied Avocet 2, Black-tailed Godwit 7, Spotted Redshank 1, Common Sandpiper 2, Common Tern 34, Marsh Warbler 2.
Meeslouwerplas: Common Buzzard 2.
Leidschendammerhout: White Stork 1 female + 3 pulli (on artificial nest), Common Buzzard 2.
Passing: Stock Dove 2 E.
May 16 - Eurasian Spoonbill 1, Mute Swan 21, Gadwall 55, Red-crested Pochard 2 male 2 female, Black-tailed Godwit 2, Eurasian Curlew 6, Common Tern 34.
Leidschendammerhout: White Stork 1.
Passing: White Stork 3 NE, Common Buzzard 1 W.
May 15 - Eurasian Spoonbill 1, Mute Swan 20, Water Rail 1, Black-tailed Godwit 6, Common Redshank 3, Common Tern 30.
Meeslouwerplas: Great Crested Grebe 20, Great Cormorant 2, Common Shelduck 3, Common Tern 2.
Passing: White Stork 1, Eurasian Spoonbill 3 NE.
May 14 - Eurasian Spoonbill 1, Mute Swan 19, Eurasian Wigeon 1 male 1 female, Western Marsh Harrier 1 male, Common Buzzard 1, Eurasian Oystercatcher 17, Pied Avocet 5, Black-tailed Godwit 8, Eurasian Curlew 25, Common Sandpiper 2, Common Tern 31, Common Cuckoo 1 male, Bluethroat 4 male 1 female, Sedge Warbler 32, European Reed Warbler 15, Common Reed Bunting 24 male 1 female.
Meeslouwerplas: Common Buzzard 1, Bluethroat 1.
Leidschendammerhout: White Stork 2, Eurasian Sparrowhawk 1, Common Buzzard 3, Common Kestrel 1, Common Swift 2, Barn Swallow 3.
May 12 - Great Crested Grebe 8, Great Cormorant 2, Eurasian Spoonbill 1, Mute Swan 16, Common Shelduck 10, Eurasian Wigeon 1 male 1 female, Gadwall 39, Common Pochard 10, Pied Avocet 2, Black-tailed Godwit 1, Eurasian Curlew 1, Ruddy Turnstone 2 (at 3:15 PM shortly present), Black-headed Gull 50, Lesser Black-backed Gull 20, Common Tern 5, Common Swift 11, Barn Swallow 60, Common House Martin 30.
Leidschendammerhout: White Stork 1, Eurasian Spoonbill 1, Common Swift 8, Barn Swallow 10.
Passing: Rose-ringed Parakeet 1.
May 10 - Eurasian Spoonbill 2, Mute Swan 17, Common Shelduck 13, Tufted Duck 75, Eurasian Oystercatcher 8, Pied Avocet 3, Black-tailed Godwit 2, Eurasian Curlew 2, Common Sandpiper 1, Common Tern 31, Common Swift 8.
Meeslouwerplas: Common Sandpiper 1.
Leidschendammerhout: White Stork 1, Common Buzzard 1, Common Kestrel 1.
Passing: Common Buzzard 1 SW.
May 9 - Eurasian Spoonbill 1, Eurasian Wigeon 4, Eurasian Sparrowhawk 1, Common Buzzard 2, Pied Avocet 5, Black-tailed Godwit 3, Spotted Redshank 1, Common Sandpiper 2, Lesser Black-backed Gull 18, Common Tern 15, Common Swift 60, Sedge Warbler 24, European Reed Warbler 14, Common Whitethroat 1, Garden Warbler 2.
Meeslouwerplas: Western Marsh Harrier 1 female, Common Kestrel 1, Lesser Whitethroat 1, Common Whitethroat 1.
Leidschendammerhout: Common House Martin 30, Common Nightingale 1.
May 8 - Great Crested Grebe 10, Great Cormorant 2, Eurasian Spoonbill 7, Mute Swan 2, Greater White-fronted Goose 3, Greylag Goose 140, Canada Goose 25, Egyptian Goose 5, Common Shelduck 16, Eurasian Wigeon 2 male 5 female, Gadwall 40, Northern Shoveler 6, Common Pochard 2 male 3 female, Tufted Duck 59 male 37 female, Eurasian Sparrowhawk 1, Common Buzzard 1, Common Kestrel 1 male, Eurasian Hobby 2, Eurasian Coot 60, Eurasian Oystercatcher 21, Pied Avocet 3, Dunlin 1, Black-tailed Godwit 3, Whimbrel 1, Spotted Redshank 3, Common Redshank 1, Common Sandpiper 13, Black-headed Gull 250 nests, Common Gull 15, Lesser Black-backed Gull 30, Great Black-backed Gull 1, Common Tern 32, Eurasian Collared Dove 4, Barn Owl 1 (5:20 AM, south side), Common Swift 180, Sand Martin 15, Barn Swallow 40, Common House Martin 8, White Wagtail 1, Winter Wren 8, Bluethroat 2, Common Grasshopper Warbler 2, Sedge Warbler 31, European Reed Warbler 31, Lesser Whitethroat 1, Common Whitethroat 3, Willow Warbler 12, Common Reed Bunting 17.
Meeslouwerplas: Garden Warbler 1, Blackcap 5.
Leidschendammerhout: White Stork 2, Common Buzzard found dead, Rose-ringed Parakeet 4, Eurasian Green Woodpecker 1, Great Spotted Woodpecker 6, Winter Wren 15, Common Nightingale 1, Northern Chiffchaff 7, Willow Warbler 3, Long-tailed Tit 2 + 6 young, European Goldfinch 2.
Passing: Eurasian Spoonbill 3 NE.
May 1 - Great Crested Grebe 6, Eurasian Spoonbill 2, Mute Swan 5, Greater White-fronted Goose 1, Greylag Goose 44 + 12 pulli, Canada Goose 4, Eurasian Wigeon 1 male, Gadwall 67, Common Kestrel 1, Pied Avocet 4, Black-tailed Godwit 13, Whimbrel 1, Spotted Redshank 5, Common Redshank 1, Common Sandpiper 1, Little Gull 2 adult 7 2cy, Black-headed Gull 243 nests, Lesser Black-backed Gull 21, Great Black-backed Gull 1, Common Tern 53, Black Tern 2, Eurasian Collared Dove 4, Barn Owl 1 (2 AM, seen from A4), Common Swift 65, Sand Martin 24, Barn Swallow 90, Common House Martin 9, Bluethroat 1, Common Grasshopper Warbler 2, Sedge Warbler 28, European Reed Warbler 22, Lesser Whitethroat 1, Common Whitethroat 2.
Meeslouwerplas: Common Kingfisher 1, Savi's Warbler 1.
Leidschendammerhout: White Stork 2, Common Buzzard 3, Common Kestrel 1, Barn Swallow 8, Common Whitethroat 2, Garden Warbler 2, Blackcap 6, Short-toed Tree Creeper 2.
Passing: Purple Heron 1 SW, Eurasian Spoonbill 1 S.

April 30 - Eurasian Spoonbill 2, Mute Swan 5, Greater White-fronted Goose 2, Egyptian Goose 14, Gadwall 49, Common Kestrel 1, Eurasian Oystercatcher 9, Pied Avocet 13, Black-tailed Godwit 14, Spotted Redshank 1, Common Tern 13, Common Swift 50, Sand Martin 6, Barn Swallow 10, Common House Martin 2, Sedge Warbler 3, European Reed Warbler 2, Common Whitethroat 1, Blackcap 2, Willow Warbler 2, Common Reed Bunting 3.
Meeslouwerplas: Western Marsh Harrier 1 male.
Leidschendammerhout: Garden Warbler 1.
April 29 - Eurasian Spoonbill 3, Mute Swan 5, Greylag Goose 60, Canada Goose 4, Common Shelduck 33, Eurasian Wigeon 16, Gadwall 88, Northern Shoveler 6, Eurasian Oystercatcher 40, Pied Avocet 14, Black-tailed Godwit 22, Whimbrel 3, Eurasian Curlew 20, Spotted Redshank 7, Common Redshank 2, Common Sandpiper 1, Common Tern 21, Common Cuckoo 1, Common Grasshopper Warbler 1.
Meeslouwerplas: White Stork 1, Common Cuckoo 1, Bluethroat 1, Whinchat 1 male, Northern Wheatear 1 male, Savi's Warbler 1, Common Whitethroat 1.
Passing: Whimbrel 3 N.
April 28 - Great Cormorant 8, Eurasian Spoonbill 1, Mute Swan 13, Eurasian Oystercatcher 25, Pied Avocet 9, Black-tailed Godwit 29, Eurasian Curlew 1, Spotted Redshank 5, Common Sandpiper 2, Lesser Black-backed Gull 37, Common Tern 39, Barn Swallow 2.
Meeslouwerplas: Common Buzzard 1.
Leidschendammerhout: White Stork 2, Common Kestrel 1.
April 26 -
Meeslouwerplas: Common Grasshopper Warbler 1, Savi's Warbler 1.
April 24 - Northern Pintail 2 male, Common Goldeneye 1 male, Pied Avocet 5, Black-tailed Godwit 52, Spotted Redshank 3, Little Gull (adult summer plumage), Common Tern 25.
Meeslouwerplas: Common Buzzard 2, Common Cuckoo 1, Common Nightingale 3, Bluethroat 3, Common Grasshopper Warbler 1, Savi's Warbler 1, Sedge Warbler 22, European Reed Warbler 4, Blackcap 18, Common Reed Bunting 4.
April 22 - Western Marsh Harrier 1 male 1 female, Common Buzzard 2, Common Kestrel 2, Pied Avocet 13, Black-tailed Godwit 97, Eurasian Curlew 9, Common Tern 5, Eurasian Green Woodpecker 1, Bluethroat 1, European Goldfinch 1.
Meeslouwerplas: Common Buzzard 5, Common Kestrel 1 male, Barn Swallow 10, Bluethroat 1.
Leidschendammerhout: White Stork 2, Eurasian Spoonbill 1, Gadwall 11, Common Teal 10, Northern Shoveler 14, Tufted Duck 6, Eurasian Sparrowhawk 1, Common Buzzard 2, Common Kestrel 1, Pied Avocet 2, Black-tailed Godwit 5, Stock Dove 1, Rose-ringed Parakeet 2, Barn Swallow 2, European Goldfinch 5.
Passing: White Stork 2, Common Tern 2 SW, Common Swift 5 NE.
April 21 - Hermine 1 (north west side).
April 20 - Common Goldeneye 1 male 1 female, Pied Avocet 4, Black-tailed Godwit 46, Barn Swallow 6, Common House Martin 28, Bluethroat 1, European Reed Warbler 2.
Meeslouwerplas: Bluethroat 1, Savi's Warbler 1, European Reed Warbler 1.
Leidschendammerhout: White Stork 2, Pied Avocet 2, Spotted Redshank 3, Garden Warbler 2.
April 19 - Great Cormorant 5, Great Egret 1, Mute Swan 2, Common Shelduck 16, Northern Pintail 5 male 5 female, Common Goldeneye 2 male 3 female, Western Marsh Harrier 1 female, Eurasian Oystercatcher 31, Pied Avocet 8, Black-tailed Godwit 145, Spotted Redshank 1, Common Tern 2, Barn Swallow 2, Bluethroat 1, Savi's Warbler 1, Sedge Warbler 14, Blackcap 4, Common Reed Bunting 9.
Meeslouwerplas: Great Crested Grebe 37, Great Spotted Woodpecker 1 male.
Leidschendammerhout: White Stork 2, Eurasian Spoonbill 2, Common Shelduck 2, Common Buzzard 1, Stock Dove 1.
Passing: Eurasian Spoonbill 1 NW.
April 18 - Little Grebe 1, Eurasian Spoonbill 1, Gadwall 83, Northern Shoveler 96, Common Goldeneye 5 female, Common Buzzard 2, Eurasian Oystercatcher 45, Pied Avocet 9, Black-headed Gull 208 nests, Common Tern 1.
Meeslouwerplas: Savi's Warbler 1.
April 17 - Eurasian Spoonbill 1, Gadwall 26, Common Teal 13, Northern Pintail 4 male 4 female, Northern Shoveler 206, Water Rail 1, Pied Avocet 11, Common Snipe 1, Black-tailed Godwit (>50% Islandica), Common Tern 1.
Meeslouwerplas: Eurasian Sparrowhawk 1, Common Buzzard 1, Bluethroat 3, Blackcap 7.
Passing: Great Egret 1 SE, White Stork 1, Eurasian Spoonbill 1 NE, Common Greenshank 3 NE, Blue-headed Wagtail 2.
April 16 - Great Egret 1, Northern Pintail 4 male 2 female, Common Goldeneye 3 male 4 female, Common Buzzard 1, Eurasian Oystercatcher 22, Pied Avocet 16, Black-tailed Godwit 240, Great Black-backed Gull 2.
Leidschendammerhout: White Stork 3, Eurasian Spoonbill 1, Common Teal 14, Pied Avocet 1, Black-tailed Godwit 6.
April 15 - Great Egret 1, Eurasian Spoonbill 1, Canada Goose 43, Common Shelduck 12, Northern Pintail 11, Common Goldeneye 2 male 3 female, Western Marsh Harrier 1 male, Common Buzzard 2, Water Rail 2, Pied Avocet 16, Black-tailed Godwit 230.
Meeslouwerplas: Great Crested Grebe 46, Western Marsh Harrier 1 male 1 female, Common Buzzard 1, Common Kestrel 1, Common Kingfisher 1, Bluethroat 5 singing, Sedge Warbler 8, European Reed Warbler 1, Blackcap 5, Northern Chiffchaff 11, Willow Warbler 34, Long-tailed Tit 2.
Leidschendammerhout: White Stork 2, Common Teal 16, Hermine 1 (with Rat or Mole as prey).
Passing: Eurasian Spoonbill 1 NE, Eurasian Sparrowhawk 1 S, Common Buzzard 1 S, Eurasian Curlew 35 NE, Barn Swallow 3 NE.
April 14 - Great Egret 1, Eurasian Spoonbill 6, Greater White-fronted Goose 3, Greylag Goose 70 + 8 pulli, Canada Goose 4, Barnacle Goose 2, Northern Pintail 5 male 3 female, Western Marsh Harrier 1 male 1 female, Pied Avocet 9, Black-tailed Godwit 170 (appr. 100 Islandica), Common Redshank 1, Black-headed Gull nests, Common Kingfisher 1, Bluethroat 5, Sedge Warbler 27 singing, Willow Warbler 12.
Leidschendammerhout: White Stork 2 (on nest), Common Buzzard 2, Stock Dove 2, Rose-ringed Parakeet 2, Blackcap 4, Willow Warbler 3, Long-tailed Tit 2.
Passing: Eurasian Spoonbill 1 NE, Meadow Pipit 4 NE, White Wagtail 1.
April 13 - Common Shelduck 10, Common Teal 10, Northern Pintail 2 male 2 female, Tufted Duck 180, Common Goldeneye 1 male 4 female, Western Marsh Harrier 1 male 1 female, Eurasian Oystercatcher 32, Pied Avocet 9, Black-tailed Godwit 230.
Leidschendammerhout: White Stork 2, Eurasian Spoonbill 1, Common Shelduck 2, Gadwall 19, Common Teal 16, Northern Shoveler 39, Tufted Duck 9, Eurasian Oystercatcher 3, Black-tailed Godwit 21, Stock Dove 2, Barn Swallow 2, Blackcap 3, House Sparrow 4.
Passing: White Stork 1 S.
April 12 - Northern Pintail 2 male 3 female, Common Goldeneye 2 male 3 female, White-headed Duck 1 (and back again), Western Marsh Harrier 1 male 1 female, Eurasian Sparrowhawk 1 female, Common Buzzard 1, Pied Avocet 10, Black-tailed Godwit 38, Common Tern 1, Bluethroat 3 male, Sedge Warbler 2, Red Fox 1.
Meeslouwerplas: Western Marsh Harrier 1 male, Bluethroat 2, Sedge Warbler 1, Blackcap 3.
Leidschendammerhout: White Stork 2, Eurasian Spoonbill 1, Northern Shoveler 26, Eurasian Sparrowhawk 2, Common Buzzard 1, Black-tailed Godwit 125.
April 11 -
Meeslouwerplas: Western Marsh Harrier 1, Bluethroat 1, Savi's Warbler 1, Sedge Warbler 5, European Reed Warbler 1.
Passing: Western Marsh Harrier 1 N, Eurasian Sparrowhawk 1 SW.
April 10 - Northern Pintail 6, Black-tailed Godwit 265.
Meeslouwerplas: Great Crested Grebe 26, Black-necked Grebe 1, Greylag Goose 20, Canada Goose 2, Gadwall 6, Tufted Duck 10, Eurasian Coot 28, Winter Wren 24, Bluethroat 3, Sedge Warbler 3, European Reed Warbler 2 (earliest ever), Blackcap 4, Northern Chiffchaff 11, Willow Warbler 30, Long-tailed Tit 2, Short-toed Tree Creeper 1, Eurasian Jay 2, Common Chaffinch 2, Common Reed Bunting 2.
Passing: Barn Swallow 2 NW.
April 9 - Black-necked Grebe 2, Eurasian Spoonbill 1, Common Shelduck 35, Eurasian Wigeon 1100, Northern Pintail 5 male 3 female, Common Goldeneye 5 male 8 female, Western Marsh Harrier 3, Common Buzzard 1, Peregrine Falcon 1 (shorly hunting at 3:15 PM, then SW), Pied Avocet 8, Common Snipe 1, Black-tailed Godwit 350, Common Redshank 2, Black-headed Gull 1500, Lesser Black-backed Gull 90, Common Tern 1, Bluethroat 3, Sedge Warbler 2.
Meeslouwerplas: Common Buzzard 1, Common Redshank 13, Dunnock 2, Bluethroat 2, Sedge Warbler 2, Blackcap 2, Willow Warbler 8.
Leidschendammerhout: White Stork 2, Common Shelduck 4, Gadwall 41, Northern Shoveler 20, Common Buzzard 4, Pheasant 8, Eurasian Oystercatcher 2, Black-tailed Godwit 90, Common Redshank 2, Stock Dove 4, Great Spotted Woodpecker 1, European Goldfinch 2.
Passing: Eurasian Sparrowhawk 1 NW.
April 8 - Eurasian Sparrowhawk 1 male, Common Moorhen 2, Willow Warbler 8.
Meeslouwerplas: Blackcap 1 male.
April 7 - Little Grebe 1, Black-necked Grebe 1, Northern Pintail 7 male 5 female, Common Goldeneye 4 male 7 female, Pied Avocet 4, Black-tailed Godwit 210.
Meeslouwerplas: Great Crested Grebe 30, Dunnock 1, Blackcap 2, Willow Warbler 8.
Leidschendammerhout: White Stork 2, Common Shelduck 2, Gadwall 37, Common Teal 17, Northern Pintail 1, Northern Shoveler 26, Tufted Duck 16, Common Buzzard 4, Eurasian Oystercatcher 2, Pied Avocet 2, Black-tailed Godwit 132, Common Redshank 1, Stock Dove 1, Great Spotted Woodpecker 1, Bluethroat 1, Blackcap 1, Willow Warbler 3, Common Reed Bunting 2.
Passing: Mediterranean Gull 2 adult SE, Barn Swallow 2 S.
April 6 - Little Grebe 2, Black-necked Grebe 3, Eurasian Spoonbill 4, Western Marsh Harrier 1 male 2 female, Black-tailed Godwit 250, Lesser Black-backed Gull 85, Sand Martin 8, Water Pipit 5 (roost), Sedge Warbler 1. White-headed Duck not found.
Passing: Eurasian Curlew 2.
April 5 - Black-necked Grebe 3, Greater White-fronted Goose 2, Greylag Goose 140, Common Teal 10, Northern Pintail 3 male 3 female, Northern Shoveler 310, Common Goldeneye 5 male 10 female, White-headed Duck 1 (female-type, back again), Western Marsh Harrier 1 male, Pied Avocet 2, Common Snipe 4, Black-tailed Godwit 30, Black-headed Gull appr. 160 nests, Common Tern 3, Barn Swallow 1, Bluethroat 6, Sedge Warbler 2, Willow Warbler 9, Bearded Reedling 1 male.
Meeslouwerplas: Common Redshank 6, Bluethroat 1.
Leidschendammerhout: White Stork 1 (breeding), Eurasian Spoonbill 1, Eurasian Sparrowhawk 1 male 1 female, Common Buzzard 2, Black-tailed Godwit 178 (appr. 80 Islandica), Common Redshank 2, Great Spotted Woodpecker 4, Bluethroat 1, Blackcap 2, Northern Chiffchaff 10, Short-toed Tree Creeper 3 singing, Eurasian Jay 10.
Passing: Eurasian Spoonbill 1 NE, Little Gull 34 SW (at 8:20 AM in one group, 32 adult + 2 2cy).

One of the White-headed Duck is back again, 5-4-2010

Bluethroat, 2-4-2010 (Photo © Adri de Groot)

March 30 - Black-necked Grebe 4, Great Egret 1, Common Shelduck 33, Common Teal 7, Northern Shoveler 290, Common Pochard 16, Common Goldeneye 6 male 11 female, Eurasian Oystercatcher 52, Pied Avocet 3, Black-tailed Godwit 1, Common Redshank 2, Black-headed Gull 15 rings read, Lesser Black-backed Gull 31.
March 29 - Black-necked Grebe 4, Great Egret 1, Eurasian Spoonbill 2, Canada Goose 3, Common Shelduck 55, Eurasian Wigeon 2800, Gadwall 12, Northern Pintail 2 male 2 female, Northern Shoveler 276, Common Goldeneye 8 male 15 female, Common Buzzard 1, Eurasian Oystercatcher 160, Black-tailed Godwit 70, Common Redshank 7, Black-headed Gull 3800 (7 rings read), Common Gull 2700, Lesser Black-backed Gull 108, European Herring Gull 300.
Meeslouwerplas: Little Grebe 4, Common Buzzard 1, Common Redshank 61, Bluethroat 1, Northern Chiffchaff 8, Willow Warbler 3.
Leidschendammerhout: White Stork 3, Common Shelduck 4, Northern Pintail 1 female, Black-tailed Godwit 600, Common Redshank 1, Great Spotted Woodpecker 1, Northern Chiffchaff 4.
Passing: Eurasian Curlew 34 SW.
March 28 - Sedge Warbler 1.
Meeslouwerplas: Barn Swallow 1.
Leidschendammerhout: White Stork 3, Pied Avocet 3, Black-tailed Godwit 280.
March 26 - Black-necked Grebe 5 (1 still in winter plumage), Great Egret 1, Eurasian Spoonbill 1, Common Shelduck 67, Northern Pintail 2 male 1 female, Northern Shoveler 203, Common Goldeneye 6 male 13 female, Smew 1 female, Eurasian Oystercatcher 140, Pied Avocet 5, Black-tailed Godwit 18, Common Redshank 2.
Meeslouwerplas: Common Redshank 18.
Leidschendammerhout: White Stork 3, Common Shelduck 2, Gadwall 59, Common Teal 12, Garganey 1 male 1 female, Northern Shoveler 9, Tufted Duck 16, Northern Goshawk 1 juvenile, Eurasian Sparrowhawk 1, Eurasian Coot 27, Eurasian Oystercatcher 4, Common Snipe 1, Black-tailed Godwit 650, Common Redshank 4.
March 24 - Little Grebe 1, Black-necked Grebe 1, Eurasian Spoonbill 1, Mute Swan 1, Greater White-fronted Goose 650, Northern Pintail 4 male 2 female, Northern Shoveler 131 male 66 female, Common Goldeneye 10 male 18 female, Smew 1 female, Eurasian Sparrowhawk 1, Common Buzzard 2, Jack Snipe 1, Common Snipe 7, Yellow-legged Gull 1 4cy, Pontic Gull 1 3cy, Bluethroat 4 male singing, Willow Warbler 1.
Meeslouwerplas: Willow Warbler 1.
Leidschendammerhout: White Stork 2 on nest, Mute Swan 2, Black-tailed Godwit 200, Rose-ringed Parakeet 4 (nesting?).
Passing: Great Cormorant 4 NE, Eurasian Spoonbill 1, Barnacle Goose 478 NE (5 groups around 8 AM), Meadow Pipit 6 NE, White Wagtail 8 SE.
March 23 - Black-necked Grebe 1, Great Egret 1, Common Shelduck 45, Eurasian Wigeon 4000, Northern Pintail 3 male 3 female, Common Goldeneye 6 male 10 female, Smew 1 female, Eurasian Sparrowhawk 1, Eurasian Oystercatcher 110, Pied Avocet 16, Black-tailed Godwit 130, Common Redshank 6.
Meeslouwerplas: Little Grebe 1, Eurasian Oystercatcher 4, Common Redshank 40.
Leidschendammerhout: Great Egret 1, White Stork 3, Eurasian Spoonbill 1, Common Shelduck 4, Common Teal 14, Northern Pintail 1, Pied Avocet 2, Black-tailed Godwit 600, Stock Dove 2, Rose-ringed Parakeet 1, Great Spotted Woodpecker 3.
March 22 - Little Grebe 1, Great Egret 1.
March 21 - White Stork 4, Common Buzzard 2, Northern Chiffchaff 2, Common Reed Bunting 4.
Meeslouwerplas: Northern Chiffchaff 3.
Leidschendammerhout: White Stork 2, Common Shelduck 2, Gadwall 12, Common Teal 13, Northern Shoveler 5, Common Pochard 3, Tufted Duck 7, Northern Lapwing 3, Black-tailed Godwit 200, Common Redshank 7, Northern Chiffchaff 1 singing, Common Reed Bunting 1 male.
March 19 - White-headed Duck 1 (last sighting?).
March 18 - Great Egret 1, White-headed Duck 2, Pied Avocet 5.
Leidschendammerhout: Pied Avocet 2.
March 17 - White Stork 1 (on artificial nest Kniplaan), Eurasian Spoonbill 1, Greater White-fronted Goose 336, Northern Pintail 3 male 4 female, Garganey 1 male, Common Goldeneye 3 male 5 female, White-headed Duck 2 (together in soutwest end), Eurasian Sparrowhawk 1, Common Buzzard 3, Pied Avocet 9, Common Snipe 2, Black-tailed Godwit 270 (7 ringed), Common Redshank 6, Common Kingfisher 1, Dunnock 7, Bearded Reedling 4, Common Magpie 7, Common Reed Bunting 22.
Meeslouwerplas: Little Grebe 2, Great Crested Grebe 49, Eurasian Spoonbill 22, Spotted Redshank 3, Common Redshank 6.
Leidschendammerhout: White Stork 2 (on artificial nest), Redwing 20 (singing), Northern Chiffchaff 2, Goldcrest 1 singing, Long-tailed Tit 2, Short-toed Tree Creeper 3, Eurasian Jay 4, Common Chaffinch 10.
Passing: Great Cormorant 9 NE, Barnacle Goose 18 NE, Mediterranean Gull 1 NE (4 PM, in a straight line).

Bearded Reedling, 17-3-2010

White-headed Duck, 10-3-2010

White-headed Duck is "beast of the week" in NRC Weekblad,, 6-3-2010

February 28 - Greater White-fronted Goose 3, Northern Pintail 2, Common Goldeneye 9 male 11 female, White-headed Duck 2, Common Buzzard 1, Common Redshank 2, Lesser Black-backed Gull 5, Black Swan 1.
Meeslouwerplas: Velvet Scoter 4 (back again), Spotted Redshank 3, Common Redshank 2.
Passing: Eurasian Spoonbill 1 S.

Two White-headed Ducks with a male Ruddy Duck, 28-2-2010

Greater Scaup, 23-2-2010 (Photo © Adri de Groot)

White-headed Duck, 20-2-2010

Kingfishers holding on, 12-2-2010 (Photo © Adri de Groot)

January 31 - Great Bittern 1, Bewick's Swan 18 adult 3 juvenile, Common Shelduck 6, Common Teal 10, Northern Pintail 34 male 41 female, Northern Shoveler 14, Smew 4 female, Goosander 6 female, Eurasian Curlew 310, Water Pipit 10.
Meeslouwerplas: Great Egret 10, Eurasian Wigeon 21500, Velvet Scoter 4, Water Rail 2.
Vliet: Smew 3 female, Goosander 5 female.
Passing: Eurasian Skylark 4, Fieldfare 20 SW.
January 30 - Common Shelduck 7, Common Teal 12, Northern Pintail 32 male 33 female, Common Goldeneye 7 male 6 female, Smew 2 female, Goosander 3 male 5 female, Common Buzzard 1, Northern Lapwing 6, Eurasian Curlew 28. 60% open water again.
Meeslouwerplas: Little Grebe 4, Velvet Scoter 4, Common Goldeneye 2 male 2 female, Smew 2 female.
Leidschendammerhout: Great Egret 3, Egyptian Goose 46, Common Buzzard 2, Pheasant 6, Common Kingfisher 1 female (fishing succesfully), Great Spotted Woodpecker 1, Eurasian Skylark 2, Meadow Pipit 8, Fieldfare 70.
Passing: Greater White-fronted Goose 265 N 45 S, Fieldfare 11 S.
January 27 -
Meeslouwerplas: Little Grebe 7, Great Egret 24 (roost, didn't leave, record count), Bewick's Swan 12 adult 1 juvenile, Whooper Swan 1, Greater White-fronted Goose 3900, Egyptian Goose 100, Common Shelduck 6, Eurasian Wigeon 17000, Common Teal 120, Mallard 2100, Northern Pintail 35 male 27 female, Northern Shoveler 29, Velvet Scoter 4, Common Goldeneye 4 male 4 female, Smew 3 male 4 female, Common Buzzard 1, Pheasant 2 male 2 female, Common Kingfisher 1. Hunting party in adjacent area caused some disturbance.
Spekpolder: Little Grebe 5, Mute Swan 13, Bewick's Swan 2, Pink-footed Goose 2, Greater White-fronted Goose 400, Greylag Goose 800, Bar-headed Goose 1, Barnacle Goose 75, Egyptian Goose 180.
Passing: Eurasian Skylark 2, Fieldfare 22 SW.

Great Egret, 27-1-2010

Velvet Scoter, 17-1-2010 (Photo © Marijn Hoogteijling)

Velvet Scoters still present, feeding on freshwater mussels, 13-1-2010

Velvet Scoter, 10-1-2010

Red-crested Pochard, 3-1-2010 (Photo © Marijn Hoogteijling)

Some sightings were obtained through waarneming.nl