 |
| |||
| greater scaup duck (Aythya marila) | |||
| greater scaup (Aythia marila dimock) | |||
| bluebill (Aythya marilla); blue-bill (Aythya marila); greater scaup (Aythya marila); scaup (Aythya marila) | |||
| морская чернеть: 12 phrases in 4 subjects |
| Biology | 3 |
| General | 2 |
| Ornithology | 3 |
| Zoology | 4 |