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uniform swiftlet
The uniform swiftlet, (''Aerodramus vanikorensis''), also known as the Vanikoro or lowland swiftlet, is a gregarious, medium-sized swiftlet with a shallowly forked tail. The colouring is dark grey-brown, darker on the upperparts with somewhat paler underparts, especially on chin and throat. This species is widespread from the Philippines through Wallacea, New Guinea and Melanesia. It forages for flying insects primarily in lowland forests and open areas. It nests in caves where it uses its sense of echolocation, rare in birds, to navigate.
==Description==
The uniform swiftlet is a gregarious, medium-sized swiftlet with a shallowly forked tail. It is about 13 cm long with a wingspan averaging around 27 cm. It weighs about 11 grams. The colouring is dark grey-brown, darker on the upperparts with paler underparts, especially on chin and throat. It is similar to, and most likely to be confused with, the white-rumped swiftlet or mountain swiftlet.
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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