The site was identified as internationally important for bird conservation in 2000 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 |
Common Pochard Aythya ferina |
VU |
winter (1997) |
540–5,137 birds |
B1i, C3 |
Common Pochard Aythya ferina |
VU |
passage (1997) |
1,000–4,000 birds |
B1i, C3 |
Northern Shoveler Spatula clypeata |
LC |
winter (1997) |
259–1,427 birds |
B1i, C3 |
Northern Shoveler Spatula clypeata |
LC |
passage (1997) |
600 birds |
B1i, C3 |
Gadwall Mareca strepera |
LC |
winter (1997) |
33–818 birds |
B1i, C3 |
Gadwall Mareca strepera |
LC |
passage (1997) |
100–300 birds |
B1i, C3 |
European Nightjar Caprimulgus europaeus |
LC |
breeding (1991) |
15–25 pairs |
C6 |
Common Crane Grus grus |
LC |
passage (1997) |
500–5,000 birds |
A4i, B1i, C2 |
Eurasian Bittern Botaurus stellaris |
LC |
breeding (1997) |
30–35 pairs |
B2, C2, C6 |
Common Little Bittern Ixobrychus minutus |
LC |
breeding (1995) |
8–12 pairs |
C6 |
Black-crowned Night Heron Nycticorax nycticorax |
LC |
breeding (1994) |
35–45 pairs |
C6 |
Purple Heron Ardea purpurea |
LC |
breeding (1994) |
150 pairs |
C2, C6 |
Little Egret Egretta garzetta |
LC |
breeding (1997) |
15–20 pairs |
C6 |
Eurasian Thick-knee Burhinus oedicnemus |
LC |
breeding (1991) |
10–15 pairs |
C6 |
Black-winged Stilt Himantopus himantopus |
LC |
breeding (1995) |
6–7 pairs |
C6 |
Whiskered Tern Chlidonias hybrida |
LC |
breeding (1996) |
650–670 pairs |
A4i, B1i, B2, C2, C6 |
Whiskered Tern Chlidonias hybrida |
LC |
passage (1996) |
1,000 birds |
A4i, B1i, C2 |
Black Tern Chlidonias niger |
LC |
breeding (1996) |
7–8 pairs |
C6 |
European Honey-buzzard Pernis apivorus |
LC |
breeding (1991) |
8–15 pairs |
C6 |
Western Marsh-harrier Circus aeruginosus |
LC |
breeding (1991) |
55–60 pairs |
C6 |
Black Kite Milvus migrans |
LC |
breeding (1991) |
15–20 pairs |
C6 |
Common Kingfisher Alcedo atthis |
LC |
breeding (1991) |
50–75 pairs |
C6 |
Red-backed Shrike Lanius collurio |
LC |
breeding (1991) |
50–75 pairs |
C6 |
A4iv Species group - soaring birds/cranes |
n/a |
passage (1997) |
500–5,000 birds |
B1iv, C5 |
A4iii Species group - waterbirds |
n/a |
winter (1997) |
20,000-49,999 birds |
A4iii, C4 |
A4iii Species group - waterbirds |
n/a |
passage (1997) |
20,000-49,999 birds |
A4iii, C4 |