Lake Chad basin | 2010 | Expert opinion | 1-1,000 | Trolliet, B. in litt 2011 | |
1982-1992 | Poor | DEC |
Scott, D.A. and Rose, P.M. 1996. Atlas of Anatidae
[more]
| |
Eastern Africa (south to N Zambia) | 2001 | Best guess | 25,000-100,000 |
Dodman, T. 2002. Waterbird Population Estimates in
[more]
| |
1986-1996 | Poor | STA |
Scott, D.A. and Rose, P.M. 1996. Atlas of Anatidae
[more]
| |
Southern Africa (north to S Zambia) | 2001 | Best guess | 25,000-100,000 |
Dodman, T. 2002. Waterbird Population Estimates in
[more]
| |
1986-1996 | Poor | STA |
Scott, D.A. and Rose, P.M. 1996. Atlas of Anatidae
[more]
| |