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song sparrow
The song sparrow (''Melospiza melodia'') is a medium-sized American sparrow. Among the native sparrows in North America, it is easily one of the most abundant, variable and adaptable species.
==Description==
Adult song sparrows have brown upperparts with dark streaks on the back and are white underneath with dark streaking and a dark brown spot in the middle of the breast. They have a brown cap and a long brown rounded tail. Their face is gray with a streak through the eye. They are highly variable in size across numerous subspecies (for subspecies details, see below). The body length ranges from and wingspan can range from .〔(eNature: Song Sparrow ''Melospiza melodia'' )〕〔(The Cornell lab of ornithology: Song Sparrow ''Melospiza melodia'' )〕 Body mass ranges from ,.〔''CRC Handbook of Avian Body Masses'' by John B. Dunning Jr. (Editor). CRC Press (1992), ISBN 978-0849342585.〕 The average of all races is but the widespread nominate subspecies (''M. m. melodia'') weighs only about on average. The maximum lifespan in the wild is 11.3 years.
In the field, they are most easily confused with its congener the Lincoln's sparrow, and the Savannah sparrow. The former can be recognized by its shorter, grayer tail and the differently-patterned head, the brown cheeks forming a clear-cut angular patch. The Savannah sparrow has a forked tail and yellowish flecks on the face when seen up close.
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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