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White-collared swift
The white-collared swift (''Streptoprocne zonaris'') is a resident breeding bird from central Mexico, the Greater Antilles and Trinidad south to Peru, northern Argentina and southeastern Brazil.
This very large swift builds a saucer nest of mud, moss and chitin on a ledge in a cave, usually behind a waterfall, and lays two white eggs between March and July. It breeds in the mountains and foothills, but forages over a much larger area, including lowlands.
==Description==
White-collared swift is a massive and powerful species, 20–22 cm (8-8.8 in) long, and weighing 90-125 g (3.2-4.5 oz.). It is the largest species of swift in its range exceed in southwestern Mexico, where it may co-exist with its slightly larger cousin, the white-naped swift, which is one of the two largest swifts in the world. The white-collared swift has a wingspan of .〔Fjeldsa, J. and Krabbe, N. (1990) ''Birds of the high Andes: a manual to the birds of the temperate zone of the Andes and Patagonia, South America''. Apollo Books, Copenhagen, Denmark, pp. 238 - 239〕 It has a very slightly forked tail, which often appears square. The adults are black, glossed blue on the back, and have a white collar, broader and duller on the breast than the hindneck. Young birds are duller than adults, and the collar is reduced or absent.
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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