West Africa | 2006 | Expert opinion | 50,000-100,000 |
Dodman, T. In review, 2006. Status, estimates and
[more]
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1991-2001 | Poor | INC | Trolliet, B. in litt 2011 | |
Eastern Africa (Sudan to Zambia) | 1986-1996 | Expert opinion | 200,000-300,000 |
Scott, D.A. and Rose, P.M. 1996. Atlas of Anatidae
[more]
| |
1986-1996 | Poor | STA |
Scott, D.A. and Rose, P.M. 1996. Atlas of Anatidae
[more]
| |
Southern Africa | 1996 | Expert opinion | 50,000-100,000 |
Scott, D.A. and Rose, P.M. 1996. Atlas of Anatidae
[more]
| |
1989-1999 | Poor | INC |
Underhill, L.G. Tree, A.J., Oschadleus, H.D. & Par
[more]
| |