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Cygnus
genus of Anatidae within Anseriformes

trivial name latin name name specimens
Mute swan
Cygnus olor 		Cygnus olor 4 4
Black Swan
Cygnus atratus 		Cygnus atratus 2 2
Black-necked Swan
Cygnus melanocoryphus 		Cygnus melanocoryphus 1 1
Whooper Swan
Cygnus cygnus 		Cygnus cygnus 2 2

species comparison1)

1) According to Hartmann (2000a, 2000b and 2016)

Random specimens

Mute swan
Cygnus olor
Whooper Swan
Cygnus cygnus
Black-necked Swan
Cygnus melanocoryphus
Mute swan
Cygnus olor
Mute swan
Cygnus olor