Genus: Cygnus
Systematics :
| Kingdom | Animals (Animalia) | |||||||
| Phylum | Ryggstrengdyr (Chordata) | |||||||
| Subphylum | Virveldyr (Vertebrata) | |||||||
| Klasse | Birds (Aves) | |||||||
| Order | Andefugler (Anseriformes) | |||||||
| Family | Andefamilien (Anatidae) | |||||||
| Genus | Cygnus | |||||||
| Species | Tundra Swan (Cygnus columbianus) | |||||||
| Species | Mute Swan (Cygnus olor) | |||||||
| Species | Whooper Swan (Cygnus cygnus) | |||||||
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