| Trích dẫn | Camphuysen, C.J. and M.F. Leopold, 1994 Atlas of seabirds in the southern North Sea. IBN Research Report 94/6:126p. |
| Tài liệu tham khảo | 129963 Camphuysen, C.J. and M.F. Leopold, 1994 |
| Trang | 40 |
| Named Used as Valid | Aythya marila |
| Địa phương | |
| Distribution | North Sea. |