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Rufous-backed thrush
The rufous-backed thrush (''Turdus rufopalliatus'') is a songbird of the thrush family. It is endemic to the Pacific slope of Mexico. It is also known as the rufous-backed robin.
==Description==
This species resembles its widespread relative the American Robin in general appearance, but is a bit smaller at long, with an average wingspan of and weight of . It is named for the adult's rufous or olive-rufous upper back, which contrasts with the grayish head, nape, and rump. The chest and flanks are also rufous. The belly and undertail coverts are white; the throat is white with many black streaks. The bill and eye-ring are yellow. Females are typically somewhat duller-colored than males. Juveniles, like other juvenile ''Turdus'' thrushes, are spotted below; they are browner and have pale flecks above.
The subspecies of the Islas Tres Marías, also found around San Blas, Nayarit, is sometimes considered a separate species, Grayson's robin or Grayson's thrush, ''Turdus graysoni'' (Ridgway, 1882). It looks "washed out", with little rufous tinting.
The song is slow and warbling, with repetition of phrases.〔〔 An example is "''weedele loo loo freerlii...''"〔 The alarm call is a long, mellow, descending whistle,〔 "''cheeoo'' or ''teeeuu''".〔 Other calls resemble those of the American Robin; the flight call is thinner.〔〔
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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