The site was identified as important in 2002 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Species |
Red List1 |
Season |
Year(s) |
Size |
IBA criteria |
Whooper Swan Cygnus cygnus |
LC |
winter |
1990-1999 |
1,600 individuals |
A4i, B1i, B3, C2, C6 |
Greylag Goose Anser anser |
LC |
passage |
1990-1999 |
3,800 individuals |
A4i, B1i, C3 |
Bean Goose Anser fabalis |
LC |
passage |
1990-1999 |
28,300 individuals |
A4i, B1i, C3 |
Greater White-fronted Goose Anser albifrons |
LC |
passage |
1990-1999 |
40,000 individuals |
A4i, B1i, C3 |
Smew Mergellus albellus |
LC |
winter |
1990-1999 |
290 individuals |
B1i, C2 |
Common Pochard Aythya ferina |
VU |
passage |
1990-1999 |
12,900 individuals |
B1i, C3 |
Northern Shoveler Spatula clypeata |
LC |
passage |
1990-1999 |
4,000 individuals |
B1i, C3 |
Gadwall Mareca strepera |
LC |
passage |
1990-1999 |
850 individuals |
B1i, C3 |
Eurasian Wigeon Mareca penelope |
LC |
passage |
1997 |
15,300 individuals |
B1i, C3 |
Northern Pintail Anas acuta |
LC |
passage |
1990-1999 |
4,300 individuals |
B1i, C3 |
Common Teal Anas crecca |
LC |
winter |
1990-1999 |
9,000 individuals |
B1i, C3 |
Corncrake Crex crex |
LC |
breeding |
1990-1999 |
150-200 breeding pairs |
A1, A4i, B2, C1, C2, C6 |
Spotted Crake Porzana porzana |
LC |
breeding |
1990-1999 |
20-70 breeding pairs |
B1i, B3, C6 |
Little Crake Zapornia parva |
LC |
breeding |
1990-1999 |
10-20 breeding pairs |
C6 |
Common Crane Grus grus |
LC |
passage |
1990-1999 |
10,000 individuals |
A4i, B1i, C2, C6 |
Black Stork Ciconia nigra |
LC |
passage |
1990-1999 |
30 individuals |
C6 |
Common Little Bittern Ixobrychus minutus |
LC |
breeding |
1990-1999 |
2-5 breeding pairs |
C6 |
Great White Egret Ardea alba |
LC |
passage |
1990-1999 |
15 individuals |
C6 |
Great Cormorant Phalacrocorax carbo |
LC |
passage |
1990-1999 |
2,200 individuals |
B1i, C3 |
Ruff Calidris pugnax |
LC |
breeding |
1990-1999 |
4 breeding pairs |
C6 |
Ruff Calidris pugnax |
LC |
passage |
1990-1999 |
4,000 individuals |
C6 |
Wood Sandpiper Tringa glareola |
LC |
passage |
1990-1999 |
1,600 individuals |
C6 |
Little Tern Sternula albifrons |
LC |
breeding |
1996 |
5 breeding pairs |
C6 |
Little Tern Sternula albifrons |
LC |
passage |
1990-1999 |
50-100 individuals |
C6 |
Whiskered Tern Chlidonias hybrida |
LC |
breeding |
1996 |
5 breeding pairs |
C6 |
Black Tern Chlidonias niger |
LC |
passage |
1990-1999 |
600 individuals |
C2, C6 |
Black Tern Chlidonias niger |
LC |
breeding |
1990-1999 |
80-160 breeding pairs |
B2, C2, C6 |
European Honey-buzzard Pernis apivorus |
LC |
breeding |
1990-1999 |
5 breeding pairs |
C6 |
White-tailed Sea-eagle Haliaeetus albicilla |
LC |
winter |
1990-1999 |
60 individuals |
C6 |
White-tailed Sea-eagle Haliaeetus albicilla |
LC |
breeding |
1990-1999 |
2-4 breeding pairs |
C6 |
Common Kingfisher Alcedo atthis |
LC |
breeding |
1990-1999 |
20-25 breeding pairs |
C6 |
Aquatic Warbler Acrocephalus paludicola |
VU |
breeding |
1990-1999 |
10-35 breeding pairs |
A1, C1, C6 |
Collared Sand Martin Riparia riparia |
LC |
breeding |
1990-1999 |
1,000-3,500 breeding pairs |
B2 |
Barred Warbler Curruca nisoria |
LC |
breeding |
1990-1999 |
140-160 breeding pairs |
C6 |
Bluethroat Luscinia svecica |
LC |
breeding |
1990-1999 |
20-30 breeding pairs |
C6 |
Common Nightingale Luscinia megarhynchos |
LC |
breeding |
1990-1999 |
550-700 breeding pairs |
B3 |
A4iii Species group - waterbirds |
n/a |
passage |
1990-1999 |
127,945-127,995 individuals |
A4iii, C4 |
1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2002) may differ.
1.