Classification
Animalia [kingdom]Chordata [phylum]
Aves [class]
Anseriformes [order]
Anatidae [family]
Cygnus [genus]
Genus Cygnus bevat de volgende taxa:
Cygnus columbianus (Tundra Swan) [species]
Cygnus cygnus (Whooper Swan) [species]
Cygnus olor (Mute Swan) [species]