The site was identified as important in 1994 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 |
White-headed Duck Oxyura leucocephala |
EN |
passage |
1977 |
25 individuals |
A1 |
Mute Swan Cygnus olor |
LC |
winter |
1977-1992 |
2,200-2,530 individuals |
A4i, B1i |
Whooper Swan Cygnus cygnus |
LC |
winter |
1977-1992 |
711-849 individuals |
A4i, B1i |
Tundra Swan Cygnus columbianus |
LC |
winter |
1977-1992 |
16-51 individuals |
A4i, B1i |
Greylag Goose Anser anser |
LC |
winter |
1977 |
1,500 individuals |
B1i |
Greater White-fronted Goose Anser albifrons |
LC |
winter |
1970-1977 |
500 individuals |
A4i, B1i |
Lesser White-fronted Goose Anser erythropus |
VU |
winter |
1977 |
32 individuals |
A1 |
Smew Mergellus albellus |
LC |
winter |
1970-1977 |
382 individuals |
A4i, B1i |
Common Pochard Aythya ferina |
VU |
winter |
1970-1977 |
65,000 individuals |
A4i, B1i |
Ferruginous Duck Aythya nyroca |
NT |
passage |
1977 |
130 individuals |
A1, B1i, B2 |
Ferruginous Duck Aythya nyroca |
NT |
winter |
1970-1977 |
51 individuals |
B1i |
Tufted Duck Aythya fuligula |
LC |
winter |
1970-1977 |
34,500 individuals |
A4i, B1i |
Garganey Spatula querquedula |
LC |
passage |
1977 |
3,850 individuals |
A4i, B1i |
Northern Shoveler Spatula clypeata |
LC |
winter |
1970-1977 |
24,300 individuals |
A4i, B1i |
Gadwall Mareca strepera |
LC |
winter |
1977-1992 |
7,850-14,900 individuals |
A4i, B1i |
Eurasian Wigeon Mareca penelope |
LC |
winter |
1970-1977 |
30,000 individuals |
A4i, B1i |
Mallard Anas platyrhynchos |
LC |
winter |
1970-1977 |
67,800 individuals |
A4i, B1i |
Northern Pintail Anas acuta |
LC |
winter |
1970-1977 |
55,000 individuals |
A4i, B1i |
Common Teal Anas crecca |
LC |
winter |
1970-1977 |
540,000 individuals |
A4i, B1i |
Great Crested Grebe Podiceps cristatus |
LC |
winter |
1970-1977 |
260 individuals |
A4i, B1i |
Black-necked Grebe Podiceps nigricollis |
LC |
winter |
1970-1977 |
300 individuals |
A4i, B1i |
Eurasian Coot Fulica atra |
LC |
winter |
1970-1977 |
106,400 individuals |
A4i, B1i |
Black-crowned Night Heron Nycticorax nycticorax |
LC |
winter |
1970-1977 |
250 individuals |
B1i |
Squacco Heron Ardeola ralloides |
LC |
breeding |
1977 |
150 breeding pairs |
B1i |
Squacco Heron Ardeola ralloides |
LC |
passage |
1977 |
900 individuals |
B1i |
Cattle Egret Bubulcus ibis |
LC |
passage |
1977 |
620 individuals |
B1i |
Little Egret Egretta garzetta |
LC |
breeding |
1977 |
150 breeding pairs |
B1i |
Little Egret Egretta garzetta |
LC |
passage |
1977 |
585 individuals |
A4i, B1i |
Little Egret Egretta garzetta |
LC |
winter |
1970-1977 |
300 individuals |
B1i |
Pygmy Cormorant Microcarbo pygmaeus |
LC |
winter |
1977-1992 |
410-650 individuals |
A1, B1i, B2 |
Great Cormorant Phalacrocorax carbo |
LC |
passage |
1977 |
4,200 individuals |
A4i, B1i |
Northern Lapwing Vanellus vanellus |
NT |
winter |
1977-1992 |
2,710-5,630 individuals |
A4i, B1i |
Sociable Lapwing Vanellus gregarius |
CR |
passage |
1968-1969 |
1-8 individuals |
A1, A4i |
Whimbrel Numenius phaeopus |
LC |
passage |
1977 |
112 individuals |
B1i |
Black-tailed Godwit Limosa limosa |
NT |
winter |
1970-1977 |
1,380 individuals |
A4i, B1i |
Common Redshank Tringa totanus |
LC |
winter |
1977 |
700 individuals |
B1i |
Little Gull Hydrocoloeus minutus |
LC |
winter |
1970-1977 |
1,750 individuals |
A4i, B1i |
Black-headed Gull Larus ridibundus |
LC |
winter |
1977-1992 |
1,000-2,510 individuals |
A4i, B1i |
Whiskered Tern Chlidonias hybrida |
LC |
breeding |
1977 |
2,000-4,000 breeding pairs |
A4i, B1i |
Greater Spotted Eagle Clanga clanga |
VU |
winter |
1977 |
24 individuals |
A1, B2 |
Eastern Imperial Eagle Aquila heliaca |
VU |
winter |
1977 |
6 individuals |
B2 |
White-tailed Sea-eagle Haliaeetus albicilla |
LC |
winter |
1977 |
20 individuals |
A1, B2 |
A4iii Species group - waterbirds |
n/a |
winter |
1970-1977 |
500,000-999,999 individuals |
A4iii |
1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (1994) may differ.
1.