Classification
Biota [regio]Animalia [regnum]
Chordata [phylum]
Aves [classis]
Anseriformes [ordo]
Anatidae [familia]
Aythya [genus]
Genus Aythya contains the following taxa:
Aythya ferina (Linnaeus, 1758) [species]
Aythya fuligula (Linnaeus, 1758) [species]
Aythya marila (Linnaeus, 1761) [species]