黑颈天鹅
Black-necked Swan
Cygnus melancoryphus
.jpg/500px-00_2102_Trauerschwäne_(Breisach_am_Rhein).jpg)
形态与习性
The black-necked swan (Cygnus melancoryphus) is a species of waterfowl in the tribe Cygnini of the subfamily Anserinae. It is found in Argentina, Brazil, Chile, Uruguay, and the Falkland Islands.
Black-necked Swan
Cygnus melancoryphus
The black-necked swan (Cygnus melancoryphus) is a species of waterfowl in the tribe Cygnini of the subfamily Anserinae. It is found in Argentina, Brazil, Chile, Uruguay, and the Falkland Islands.
_cropped.jpg/500px-African_pygmy_goose,_Nettapus_auritus,_at_Muirhead_Dams,_Royal_Macadamia_Plantations,_Machado,_Limpopo,_South_Africa_-_male_(26210431045)_cropped.jpg)
_Quidi_Vidi_Lake,_St_John's,_Newfoundland_(8710694225).jpg/500px-028_-_AMERICAN_BLACK_DUCK_(2-19-11)_Quidi_Vidi_Lake,_St_John's,_Newfoundland_(8710694225).jpg)
_hembra,_Armenia,_Colombia_(4834538300).jpg/500px-Oxyura_ferruginea_(Pato_andino)_hembra,_Armenia,_Colombia_(4834538300).jpg)
