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・ Black-crested antshrike
・ Black-crested bulbul
・ Black-crested coquette
・ Black-crested finch
・ Black-crested tit
・ Black-crested tit-tyrant
・ Black-crested titmouse
・ Black-crested warbler
・ Black-crowned antpitta
・ Black-crowned antshrike
・ Black-crowned babbler
・ Black-crowned barwing
・ Black-crowned Central American squirrel monkey
・ Black-crowned fulvetta
・ Black-crowned monjita
Black-crowned night heron
・ Black-crowned sparrow-lark
・ Black-crowned tanager
・ Black-crowned tchagra
・ Black-crowned tityra
・ Black-crowned waxbill
・ Black-crowned white-eye
・ Black-crowned woodpecker
・ Black-dot nudibranch
・ Black-dotted piculet
・ Black-dotted tree frog
・ Black-Dutch
・ Black-eared cuckoo
・ Black-eared fairy
・ Black-eared flying fox


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Black-crowned night heron : ウィキペディア英語版
Black-crowned night heron

The black-crowned night heron (''Nycticorax nycticorax''), commonly abbreviated to just night heron in Eurasia, is a medium-sized heron found throughout a large part of the world, except in the coldest regions and Australasia (where it is replaced by the closely related rufous night heron, with which it has hybridized in the area of contact).
== Description ==
Adults are approximately long and weigh . They have a black crown and back with the remainder of the body white or grey, red eyes, and short yellow legs. They have pale grey wings and white under parts. Two or three long white plumes, erected in greeting and courtship displays, extend from the back of the head. The sexes are similar in appearance although the males are slightly larger. Black-crowned night herons do not fit the typical body form of the heron family. They are relatively stocky with shorter bills, legs, and necks than their more familiar cousins, the egrets and "day" herons. Their resting posture is normally somewhat hunched but when hunting they extend their necks and look more like other wading birds.
Immature birds have dull grey-brown plumage on their heads, wings, and backs, with numerous pale spots. Their underparts are paler and streaked with brown. The young birds have orange eyes and duller yellowish-green legs. They are very noisy birds in their nesting colonies, with calls that are commonly transcribed as ''quok'' or ''woc''.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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