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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Brown-headed cowbird ： ウィキペディア英語版 Brown-headed cowbird The brown-headed cowbird (''Molothrus ater'') is a small obligate brood parasitic icterid of temperate to subtropical North America. They are permanent residents in the southern parts of their range; northern birds migrate to the southern United States and Mexico in winter, returning to their summer habitat around March or April.〔 ==Description== The brown-headed cowbird is typical for an icterid in general shape, but is distinguished by a finch-like head and beak and is smaller than most icterids. The adult male is iridescent black in color with a brown head. The adult female is slightly smaller and is dull grey with a pale throat and very fine streaking on the underparts. The total length is and the average wingspan is .〔(Brown-headed Cowbird, Life History, All About Birds – Cornell Lab of Ornithology ). Allaboutbirds.org. Retrieved on 2013-03-09.〕 Body mass can range from , with females averaging against the males' average of .〔''CRC Handbook of Avian Body Masses'' by John B. Dunning Jr. (Editor). CRC Press (1992), ISBN 978-0849342585.〕 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「Brown-headed cowbird」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.