Cisne Cantor

Cygnus cygnus

Cisne Mudo

Cygnus olor

Cisne de Tundra

Cygnus columbianus

Cisne Trompetero

Cygnus buccinator

Tundra Swan

Cygnus columbianus

Trumpeter Swan

Cygnus buccinator

Whooper Swan

Cygnus cygnus

Mute Swan

Cygnus olor