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Fuegian steamer duck
The Fuegian steamer duck (''Tachyeres pteneres''), also called the Magellanic flightless steamer duck, is a flightless duck from South America. It belongs to the steamer duck genus ''Tachyeres''. It inhabits the rocky coasts and coastal islands from southern Chile and Chiloé to Tierra del Fuego, switching to the adjacent sheltered bays and lakes further inland when breeding.
==Description==
This is the largest of the steamer duck species. It is a massively built waterfowl at and in length, with the males noticeably larger than the females.〔http://whozoo.org/Intro2003/JuanAlviar/JA_Steamer.htm〕 Males weigh an average of while females weigh around on average.〔''CRC Handbook of Avian Body Masses, 2nd Edition'' by John B. Dunning Jr. (Editor). CRC Press (2008), ISBN 978-1-4200-6444-5.〕 The wingspan is , the wings being too small to functionally allow the birds to take flight. This species outweighs any other wild species called "duck" and is about the same mass as the largest wild geese in the world, although this species is only distantly related to most true ducks (for example of the genus ''Anas''). On males, the head and neck is blue-gray, with paler coloration crown and forehead. He has a narrow white eye-ring which continuing backwards as stripe and a reddish-brown throat. His abdomen, ventral area and undertail coverts are white and the tail is grey. Females are a darker gray-brown on the head and dark reddish on the throat. Her body and wings as males, but she may have brown/wine colouring on feathers. The juvenile is similar to the female but slightly duller colored.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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