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Black-winged petrel : ウィキペディア英語版 | Black-winged petrel
The black-winged petrel (''Pterodroma nigripennis'') is a species of seabird in the family Procellariidae. It breeds on a number of oceanic islands in the tropical and subtropical East Pacific Ocean and spends the rest of the year at sea. ==Description==
The black-winged petrel is a small species of petrel with long, narrow wings. Its length averages and its wingspan averages . It has a small head and short black beak, a slender body and square-cut tail. It has a pale grey cap and nape, white cheeks and a dark grey collar. The dorsal surface of the body is pale grey and the upperside of the wings is pale grey near the base but dark greyish-black along the outer edge. The underparts are white and the outer edges of the wings are black. The tail is barred in black and white.
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-winged petrel」の詳細全文を読む
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