North-west Mainland & Central Europe | 2004 | Expert opinion | 250,000 |
Wetlands International, International Waterbird Ce
[more]
| |
1997-2007 | Reasonable | INC |
Wetlands Intrenational 2011. Results of trend anal
[more]
| |
Black Sea | 1994 | Expert opinion | 45,000 |
Scott, D.A. and Rose, P.M. 1996. Atlas of Anatidae
[more]
| |
1990-2000 | Poor | INC |
BirdLife International (2004). Birds in Europe, po
[more]
| |
West & Central Asia/Caspian | 1978-1987 | Census based | 250,000 |
Scott, D.A. and Rose, P.M. 1996. Atlas of Anatidae
[more]
| |
1978-1987 | Poor | INC |
Scott, D.A. and Rose, P.M. 1996. Atlas of Anatidae
[more]
| |