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・ Yellow-throated fulvetta
・ Yellow-throated greenbul
・ Yellow-eared woodpecker
・ Yellow-edged
・ Yellow-edged lyretail
・ Yellow-edged moray
・ Yellow-eye mullet
・ Yellow-eyed babbler
・ Yellow-eyed black flycatcher
・ Yellow-eyed junco
・ Yellow-eyed penguin
・ Yellow-eyed pigeon
・ Yellow-eyed starling
・ Yellow-faced bumblebee
・ Yellow-faced flameback
Yellow-faced grassquit
・ Yellow-faced honeyeater
・ Yellow-faced horseshoe bat
・ Yellow-faced myna
・ Yellow-faced parrot
・ Yellow-faced parrotlet
・ Yellow-faced pocket gopher
・ Yellow-faced siskin
・ Yellow-fin
・ Yellow-fin perchlet
・ Yellow-flanked
・ Yellow-footed antechinus
・ Yellow-footed flycatcher
・ Yellow-footed green pigeon
・ Yellow-footed gull


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Yellow-faced grassquit : ウィキペディア英語版
Yellow-faced grassquit

The yellow-faced grassquit (''Tiaris olivaceus'') is a passerine bird from the Central American tropics and surrounding regions. It was formerly allied with the American sparrows and placed in Emberizidae; actually, however, it is one of the tholospizan "finches" which are specialized tanagers (Thraupidae). As such, it is closely related to the famous Darwin's finches.
==Description==

It is a small bird with a conical bill, sharper than that of the related seedeaters. It is long and weighs about , depending on subspecies. The adult male has an olive-green back, and its face and breast are black apart from a bright yellow throat, supercilia, and lower eyelid spot. The rest of the underparts are greyish olive. The beak and eyes are dark, the legs are grey.〔〔〔
The adult female is slightly smaller on average than the male. It is dull olive-green above and paler grey below, and may have some dark breast smudges. The yellow face pattern is much weaker and duller, and may be almost invisible. The lower part of the beak is dark horn-colored (light grey). Young birds are coloured essentially like the adult female, but duller and greyer. Young males begin to acquire full adult plumage in their first year.〔〔
The yellow-faced grassquit has a weak buzzing trilled ''ttttt-tee'' call. The song is a varying series of high thin rapid trills. Given for a prolonged time, it is melodious, yet subdued, and often only heard from a short distance away.〔〔

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「Yellow-faced grassquit」の詳細全文を読む



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