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The anhinga (; ''Anhinga anhinga''), sometimes called snakebird, darter, American darter, or water turkey, is a water bird of the warmer parts of the Americas. The word ''anhinga'' comes from the Brazilian Tupi language and means devil bird or snake bird. When swimming the origin of the name snakebird is apparent: only the colored neck appears above water so the bird looks like a snake ready to strike. They do not have external nares (nostrils) and breathe solely through their epiglottis. The anhinga is placed in the darter family, Anhingidae, and is closely related to Indian (''Anhinga melanogaster''), African (''A. rufa''), and Australian (''A. novaehollandiae'') darters. Like other darters, the anhinga hunts by spearing fishes and other small prey using its sharp, slender beak. ==Distribution and migration== ''Anhinga'' species are found all over the world in warm shallow waters.〔 The American anhinga has been subdivided into two subspecies, ''A. a. anhinga'' and ''A. a. leucogaster'', based on their location. ''A. a. anhinga'' can be found mainly east of the Andes in South America and also the islands of Trinidad and Tobago. ''A. a. leucogaster'' can be found in the southern United States, Mexico, Cuba, and Grenada.〔 A fossil species ''Anhinga walterbolesi'' has been described from the Late Oligocene to Early Miocene of Australia. Only birds that live in the extreme north and south of their range migrate and do so based on temperature and available sunlight. Anhingas will migrate towards the equator during winter but this range is "determined by the amount of sunshine to warm the chilled birds".〔 Although not in their usual range, anhingas have been found as far north as the states of Pennsylvania〔 and Wisconsin〔 in the United States. Kettles of anhingas often migrate with other birds and have been described as resembling black paper gliders.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「anhinga」の詳細全文を読む スポンサード リンク
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