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Clay-colored thrush
The clay-colored thrush (''Turdus grayi'') is a common Middle American bird of the thrush family (Turdidae). It is the national bird of Costa Rica, where it is well known as the ''yigüirro''. Other common names include clay-colored robin.〔
It ranges from South Texas (where it is rapidly expanding its range) to northern Colombia; west and north of the Isthmus of Tehuantepec. It is limited to the Atlantic slope, except for a population around Oaxaca City, Mexico that probably originates from escaped cagebirds.
==Description==
In general appearance and habits it resembles other ''Turdus'' thrushes such as the American robin. It is about the same length or slightly smaller: , and weighs on average. The plumage is brownish, somewhat lighter below than above, lightest on the flanks. Birds from humid regions are darker than those from dry regions. The throat is faintly streaked. Immature birds have faint mottling on the back and underparts. The bill is greenish-yellow with a dark base, the legs are pinkish or flesh-colored, and the irises are reddish—all useful identification points.
The song, rather low-pitched and with a slow steady tempo, consists of many slurred musical phrases which are often repeated irregularly. The ''tock'' flight call is like the American robin's but harsher.
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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