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 cage birds. n 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, and weighs 74–76 g 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.