The site was identified as internationally important for bird conservation in 2007 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 |
Whooper Swan Cygnus cygnus |
LC |
winter (1990–2006) |
800–1,200 birds |
C2, C6 |
Red-breasted Goose Branta ruficollis |
VU |
passage (1990–2006) |
200–300 birds |
C1 |
Common Goldeneye Bucephala clangula |
LC |
winter (1990–2006) |
410–520 birds |
C3 |
Smew Mergellus albellus |
LC |
winter (1990–2006) |
320–460 birds |
C2, C6 |
Goosander Mergus merganser |
LC |
winter (1990–2006) |
120–180 birds |
C3 |
Common Pochard Aythya ferina |
VU |
winter (1990–2006) |
12,000–15,000 birds |
C3 |
Tufted Duck Aythya fuligula |
LC |
winter (1990–2006) |
8,700–9,500 birds |
C3 |
Greater Scaup Aythya marila |
LC |
winter (1990–2006) |
1,500–4,000 birds |
C3 |
Red-necked Grebe Podiceps grisegena |
LC |
winter (1990–2006) |
1,200–2,000 birds |
C3 |
Black-necked Grebe Podiceps nigricollis |
LC |
winter (1990–2006) |
2,000–20,000 birds |
C3 |
Eurasian Coot Fulica atra |
LC |
winter (1990–2006) |
25,000–40,000 birds |
C3 |
Yelkouan Shearwater Puffinus yelkouan |
VU |
passage (1990–2006) |
10,000–17,000 birds |
C2, C6 |
Dalmatian Pelican Pelecanus crispus |
NT |
passage (1990–2006) |
70–120 birds |
C1, C2, C6 |
Great Cormorant Phalacrocorax carbo |
LC |
winter (1990–2006) |
10,000–27,000 birds |
C3 |
Red-necked Phalarope Phalaropus lobatus |
LC |
passage (1990–2006) |
700–1,200 birds |
C6 |
Little Gull Hydrocoloeus minutus |
LC |
passage (1990–2006) |
10,000–12,000 birds |
C2 |
Slender-billed Gull Larus genei |
LC |
passage (1990–2006) |
40–90 birds |
C2, C6 |
Black-headed Gull Larus ridibundus |
LC |
passage (1990–2006) |
20,000–50,000 birds |
C3 |
Mediterranean Gull Larus melanocephalus |
LC |
passage (1990–2006) |
1,200–1,400 birds |
C2, C6 |
Mew Gull Larus canus |
LC |
passage (1990–2006) |
8,000–14,000 birds |
C3 |
Caspian Gull Larus cachinnans |
LC |
passage (1990–2006) |
12,000–20,000 birds |
C3 |
Little Tern Sternula albifrons |
LC |
passage (1990–2006) |
300–500 birds |
C2, C6 |
Caspian Tern Hydroprogne caspia |
LC |
passage (1990–2006) |
120–140 birds |
C2, C6 |
Whiskered Tern Chlidonias hybrida |
LC |
passage (1990–2006) |
2,300–2,500 birds |
C2 |
Common Tern Sterna hirundo |
LC |
passage (1990–2006) |
2,000–4,000 birds |
C2 |
Common Gull-billed Tern Gelochelidon nilotica |
LC |
passage (1990–2006) |
320–350 birds |
C2, C6 |
Sandwich Tern Thalasseus sandvicensis |
LC |
passage (1990–2006) |
5,200–6,000 birds |
C2, C6 |
A4iii Species group - waterbirds |
n/a |
passage (1990–2006) |
110,000–250,000 birds |
C4 |