翻訳と辞書 Words near each other ・ Black-girdled barbet ・ Black-glazed Ware ・ Black-goggled tanager ・ Black-headed antbird ・ Black-headed antthrush ・ Black-headed apalis ・ Black-headed batis ・ Black-headed bee-eater ・ Black-headed berryeater ・ Black-headed blenny ・ Black-headed brush finch ・ Black-headed bulbul ・ Black-headed bunting ・ Black-headed canary ・ Black-headed cuckooshrike ・ Black-headed duck ・ Black-headed dwarf chameleon ・ Black-headed gonolek ・ Black-headed greenfinch ・ Black-headed grosbeak ・ Black-headed ground snake ・ Black-headed gull ・ Black-headed hemispingus ・ Black-headed heron ・ Black-headed honeyeater ・ Black-headed ibis ・ Black-headed jay ・ Black-headed kingfisher ・ Black-headed lapwing ・ Black-headed marmoset Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Black-headed duck ： ウィキペディア英語版 Black-headed duck The black-headed duck (''Heteronetta atricapilla'') is a South American duck allied to the stiff-tailed ducks in the subfamily Oxyurinae of the family Anatidae. It is the only member of the genus ''Heteronetta''. This is the most basal living member of its subfamily, and it lacks the stiff tail and swollen bill of its relatives. Overall much resembling a fairly typical diving duck,〔 its plumage and other peculiarities give away that it is not a very close relative of these, but rather the product of convergent evolution in the ancestors of the stiff-tailed ducks.〔 It is a small dark duck, the male with a black head and mantle and a paler flank and belly, and the female pale brown overall. They live in swamps lakes and marshes in North Chile, Paraguay, and North Argentina, feeding by dabbling on water plants and insects. The black-headed duck is an obligate brood parasite (meaning the female does not build a nest). It lay its eggs in the nests of other birds, instead, earning it the nickname ''cuckoo duck''.〔 The hosts are (particularly) rosy-billed pochard (''Netta peposaca''), other ducks, coots (''Fulica'' species), and occasionally even gulls (such as the brown-hooded) and birds of prey. Unlike some cuckoos, neither the chicks nor adults destroy the eggs or kill the chicks of the host. Instead, after a 21-day incubation, the ducklings fledge and after a few hours are completely independent, leaving their broodmates and fending for themselves. That is because the brood parasitic passerines (family Viduidae and genus Molothrus) are altricial, while black-headed duck ducklings are precocial. The black-headed duck is not considered threatened by the IUCN.〔 ==References== 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「Black-headed duck」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.