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 |
1,300 individuals |
A4i, B1i, B3, C2, C6 |
Tundra Swan Cygnus columbianus |
LC |
passage |
1990-1999 |
450 individuals |
A4i, B1i, C2 |
Barnacle Goose Branta leucopsis |
LC |
winter |
1990-1999 |
300 individuals |
C2, C6 |
Greylag Goose Anser anser |
LC |
passage |
1990-1999 |
12,000 individuals |
A4i, B1i, C3 |
Bean Goose Anser fabalis |
LC |
passage |
1990-1999 |
60,000 individuals |
A4i, B1i, C3 |
Greater White-fronted Goose Anser albifrons |
LC |
passage |
1990-1999 |
60,000 individuals |
A4i, B1i, C3 |
Common Pochard Aythya ferina |
VU |
passage |
1997 |
3,500 individuals |
B1i, C3 |
Ferruginous Duck Aythya nyroca |
NT |
breeding |
2001 |
1 breeding pairs |
C6 |
Northern Shoveler Spatula clypeata |
LC |
passage |
1990-1999 |
1,550 individuals |
B1i, C3 |
Gadwall Mareca strepera |
LC |
passage |
1990-1999 |
450 individuals |
B1i, C3 |
Northern Pintail Anas acuta |
LC |
passage |
1990-1999 |
2,000 individuals |
B1i, C3 |
Corncrake Crex crex |
LC |
breeding |
1990-1999 |
20-55 breeding pairs |
A1, A4i, B1i, C1, C2, C6 |
Spotted Crake Porzana porzana |
LC |
breeding |
1990-1999 |
10-50 breeding pairs |
C6 |
Common Crane Grus grus |
LC |
winter |
1990-1999 |
2,100 individuals |
A4i, B1i, C2 |
Common Crane Grus grus |
LC |
breeding |
2002 |
25-27 breeding pairs |
C6 |
Eurasian Bittern Botaurus stellaris |
LC |
breeding |
1990-1999 |
10-15 breeding pairs |
C2, C6 |
Common Little Bittern Ixobrychus minutus |
LC |
breeding |
2001 |
1 breeding pairs |
C2 |
Ruff Calidris pugnax |
LC |
passage |
1997 |
1,400 individuals |
C6 |
Ruff Calidris pugnax |
LC |
breeding |
1990-1999 |
6 breeding pairs |
C6 |
Wood Sandpiper Tringa glareola |
LC |
passage |
1990-1999 |
1,200 individuals |
C6 |
Black Tern Chlidonias niger |
LC |
passage |
1990-1999 |
320 individuals |
C2, C6 |
Black Tern Chlidonias niger |
LC |
breeding |
1990-1999 |
70-120 breeding pairs |
B2, C2, C6 |
Common Tern Sterna hirundo |
LC |
breeding |
1990-1999 |
20-35 breeding pairs |
C6 |
Short-eared Owl Asio flammeus |
LC |
breeding |
1990-1999 |
1 breeding pairs |
C6 |
Western Marsh-harrier Circus aeruginosus |
LC |
breeding |
1990-1999 |
30-40 breeding pairs |
C6 |
White-tailed Sea-eagle Haliaeetus albicilla |
LC |
breeding |
2002 |
3-4 breeding pairs |
C6 |
Black Kite Milvus migrans |
LC |
breeding |
1997 |
8-12 breeding pairs |
C6 |
Bluethroat Luscinia svecica |
LC |
breeding |
2001 |
10-15 breeding pairs |
C6 |
A4iv Species group - soaring birds/cranes |
n/a |
passage |
1995 |
3,000-8,000 individuals |
B1iv, C5 |
A4iii Species group - waterbirds |
n/a |
passage |
1991-1999 |
142,870 individuals |
A4iii, C4 |
A4iii Species group - waterbirds |
n/a |
passage |
1991-1999 |
142,870 individuals |
A4iii, C4 |
1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2002) may differ.
Habitat1 |
Habitat detail |
% of IBA |
Artificial/Terrestrial |
Highly improved re-seeded landscapes, Arable land, Forestry plantations, Ruderal land |
- |
Forest |
Broadleaved deciduous woodland, Mixed woodland, Alluvial and very wet forest |
- |
Grassland |
Humid grasslands, Mesophile grasslands |
- |
Shrubland |
Scrub |
- |
Wetlands (inland) |
Standing freshwater, Rivers and streams, Raised bogs, Water fringe vegetation, Fens, transition mires and springs |
- |
1.