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The brown-backed needletail (''Hirundapus giganteus''), or brown needletail, is a large swift. These birds have very short legs which they use only mainly for clinging to vertical surfaces. They never settle voluntarily on the ground and spend most of their lives in the air, living on the insects they catch in their beaks. These swifts are resident breeders in hill forests in southern Asia from India east to Indonesia and the Philippines. They build their nests in rock crevices in cliffs, laying 3-5 eggs. The flight is impressively fast, even compared to other swifts. The brown-backed needletail is a very large swift, and at 23 cm is bigger than the Alpine swift and the white-throated needletail. It has a similar build to the latter species, with a heavy barrel-like body. They are dark brown except for a white undertail, which extends on to the flanks. The ''Hirundapus'' needletailed swifts get their name from the spiny end to the tail, which is not forked as in the ''Apus'' typical swifts. ==References== * ''Birds of India'' by Grimmett, Inskipp and Inskipp, ISBN 0-691-04910-6 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-backed needletail」の詳細全文を読む スポンサード リンク
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