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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 (Spanish: [ʝi'ɣwiro]). 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 cage birds. In much of its range it is familiar in yards and gardens, similar to some other thrushes such as the American robin, the Eurasian blackbird, and the song thrush.
In general appearance and habits it resembles other Turdus thrushes such as the American robin. It is about the same length or slightly smaller: 23–27 cm (9.1–10.6 in), and weighs 74–76 g (2.6–2.7 oz) 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.
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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 (Spanish: ). Other common names include clay-colored robin.
Clay-colored robins are diurnal birds that are permanently resident in warm climates of their range. They usually forage on the ground or near it, singly or in pairs, but may also gather in flocks to feed high in fruiting trees. Clay-colored robins move on the ground by hopping, and upon landing, they often flick their tails back and forth. Their song, rather low-pitched and with a slow steady tempo, consists of many slurred musical phrases that are often repeated irregularly. The flight call is like the American robin's but harsher.
