The site was identified as internationally important for bird conservation in 2002 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Species |
Red List |
Season (year/s of estimate) |
Size |
IBA criteria |
Mute Swan Cygnus olor |
LC |
winter (1985–1995) |
12,000 birds |
A4i, B1i, C3 |
Whooper Swan Cygnus cygnus |
LC |
winter (1985–1995) |
3,000 birds |
A4i, B1i, B3, C2, C6 |
Tundra Swan Cygnus columbianus |
LC |
winter (1985–1995) |
3,500 birds |
A4i, B1i, B2, C2 |
Barnacle Goose Branta leucopsis |
LC |
winter (1985–1995) |
2,000 birds |
B1i, B2, C2, C6 |
Greylag Goose Anser anser |
LC |
winter (1985–1995) |
10,000 birds |
A4i, B1i, C3 |
Bean Goose Anser fabalis |
LC |
winter (1985–1995) |
8,000 birds |
A4i, B1i, C3 |
Greater White-fronted Goose Anser albifrons |
LC |
winter (1985–1995) |
130,000 birds |
A4i, B1i, C3 |
Long-tailed Duck Clangula hyemalis |
VU |
winter (1985–1995) |
80,000 birds |
A4i, B1i, C3 |
Common Goldeneye Bucephala clangula |
LC |
winter (1985–1995) |
18,000 birds |
A4i, B1i, C3 |
Smew Mergellus albellus |
LC |
winter (1985–1995) |
2,000 birds |
A4i, B1i, C2 |
Goosander Mergus merganser |
LC |
winter (1985–1995) |
15,000 birds |
A4i, B1i, C3 |
Red-breasted Merganser Mergus serrator |
LC |
winter (1985–1995) |
10,000 birds |
A4i, B1i, C3 |
Common Pochard Aythya ferina |
VU |
winter (1985–1995) |
12,000 birds |
B1i, C3 |
Tufted Duck Aythya fuligula |
LC |
winter (1985–1995) |
30,000 birds |
A4i, B1i, C3 |
Greater Scaup Aythya marila |
LC |
winter (1985–1995) |
70,000 birds |
A4i, B1i, B2, C3 |
Northern Shoveler Spatula clypeata |
LC |
winter (1985–1995) |
6,000 birds |
A4i, B1i, C3 |
Gadwall Mareca strepera |
LC |
winter (1985–1995) |
8,000 birds |
A4i, B1i, C3 |
Eurasian Wigeon Mareca penelope |
LC |
winter (1985–1995) |
30,000 birds |
A4i, B1i, C3 |
Mallard Anas platyrhynchos |
LC |
winter (1985–1995) |
70,000 birds |
B1i, C3 |
Northern Pintail Anas acuta |
LC |
winter (1985–1995) |
10,000 birds |
B1i, C3 |
Common Teal Anas crecca |
LC |
winter (1985–1995) |
14,000 birds |
B1i, C3 |
Red-necked Grebe Podiceps grisegena |
LC |
winter (1985–1995) |
300 birds |
B1i, C3 |
Great Crested Grebe Podiceps cristatus |
LC |
winter (1985–1995) |
4,000 birds |
A4i, B1i, C3 |
Horned Grebe Podiceps auritus |
VU |
winter (1985–1995) |
100 birds |
B1i, C2, C6 |
Eurasian Coot Fulica atra |
LC |
winter (1985–1995) |
30,000 birds |
B1i, C3 |
Common Crane Grus grus |
LC |
passage (1985–1995) |
2,000 birds |
A4i, B1i, C2 |
Great Cormorant Phalacrocorax carbo |
LC |
winter (1985–1995) |
10,000 birds |
A4i, B1i, C3 |
Pied Avocet Recurvirostra avosetta |
LC |
winter (1985–1995) |
350 birds |
C6 |
Pied Avocet Recurvirostra avosetta |
LC |
breeding (1990–1999) |
10 pairs |
C6 |
Eurasian Golden Plover Pluvialis apricaria |
LC |
winter (1985–1995) |
10,000–20,000 birds |
C6 |
Ruff Calidris pugnax |
LC |
breeding (1987) |
12 pairs |
C6 |
Ruff Calidris pugnax |
LC |
winter (1985–1995) |
600 birds |
C6 |
Little Gull Hydrocoloeus minutus |
LC |
winter (1990–1999) |
1,000 birds |
A4i, B1i, C3 |
Mediterranean Gull Larus melanocephalus |
LC |
breeding (1985–1995) |
3 pairs |
C6 |
Little Tern Sternula albifrons |
LC |
breeding (1985–1995) |
8 pairs |
C6 |
Caspian Tern Hydroprogne caspia |
LC |
winter (1985–1995) |
300 birds |
A4i, B1i, C2, C6 |
Black Tern Chlidonias niger |
LC |
winter (1990–1999) |
2,000 birds |
A4i, B1i, C2, C6 |
Common Tern Sterna hirundo |
LC |
breeding (1990–1999) |
120–150 pairs |
C6 |
Sandwich Tern Thalasseus sandvicensis |
LC |
breeding (1985–1996) |
30–31 pairs |
C6 |
White-tailed Sea-eagle Haliaeetus albicilla |
LC |
winter (1985–1995) |
50 birds |
C6 |
White-tailed Sea-eagle Haliaeetus albicilla |
LC |
breeding (1990–1999) |
9 pairs |
A1, B2, C1 |
Peregrine Falcon Falco peregrinus |
LC |
breeding (1990–1999) |
1 pairs |
C6 |
Aquatic Warbler Acrocephalus paludicola |
VU |
breeding (1990–1999) |
8 pairs |
C6 |
Collared Sand Martin Riparia riparia |
LC |
breeding (1990–1999) |
2,500 pairs |
B2 |
A4iii Species group - waterbirds |
n/a |
winter (1985–1995) |
602,150–612,150 birds |
A4iii, C4 |