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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 Bright-rumped attila ： ウィキペディア英語版 Bright-rumped attila The bright-rumped attila or polymorphic attila (''Attila spadiceus'') is a small passerine bird in the tyrant flycatcher family (Tyrannidae). It breeds from northwestern Mexico to western Ecuador, Bolivia and southeastern Brazil, and on Trinidad. == Description == The bright-rumped attila is a large tyrant flycatcher with a big head, hooked and slightly upturned bill and upright stance. It is 7 in (18 cm) long and weighs 1.4 oz (40 g). The head is olive-green streaked with black, the back is chestnut or olive, the rump bright yellow and the tail brown. The wings are dark brown with two pale wing bars and paler feather edging. The whitish or yellow throat and yellow breast are variably streaked darker. The belly is white becoming yellow near the tail. The iris is red. The sexes are similar, but young birds have a cinnamon-fringed crown and brown eyes. The plumage is very variable, but the streaking below and obvious wingbars help in distinguishing this species from others in the genus. The calls include a loud ''beat-it, beat-it'' and a plaintive ''ooo weery weery weery weery woo''. It does not move when singing, so can be difficult to see. Central American birds have slightly different song structures and also tend towards lighter ochre plumage independent of Gloger's Rule; they are sometimes separated as flammulated attila (''Attila flammulatus'') . Their characteristic song given at dawn has been analyzed in detail: it has a very variable number of ''weery''s which may become ''weery'o''s, and often ends in a ''woo-whit''; a finite state machine has been developed to simulate this structure.〔Leger (2005)〕 However, due to the highly variable songs more data is required before the technically plausible split can be accepted; the AOU has so far refrained from formally acknowledging it. 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「Bright-rumped attila」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.