Genus: Aythya
Systematics :
| Kingdom | Animals (Animalia) | |||||||
| Phylum | Ryggstrengdyr (Chordata) | |||||||
| Subphylum | Virveldyr (Vertebrata) | |||||||
| Klasse | Birds (Aves) | |||||||
| Order | Andefugler (Anseriformes) | |||||||
| Family | Andefamilien (Anatidae) | |||||||
| Genus | Aythya | |||||||
| Species | Greater Scaup (Aythya marila) | |||||||
| Species | Ferruginous Duck (Aythya nyroca) | |||||||
| Species | Common Pochard (Aythya ferina) | |||||||
| Species | Tufted Duck (Aythya fuligula) | |||||||
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