23-3-2017 SAN GERARDO DE DOTA, COSTA RICA - SOOTY THRUSH (Turdus nigrescens)

The Sooty Thrush, known scientifically as Turdus nigrescens, is a robust bird endemic to the highlands of Costa Rica and western Panama. It is a member of the Turdidae family, which it shares with other thrushes. The adult male is a striking brownish-black with black wings and tail, and a distinctive black area between the orange bill and the eye. The legs and bare eye ring are a vivid orange, and the iris is a pale grey. Females are similar but tend to be browner and somewhat paler, with yellow-orange bare parts. Juveniles can be identified by their resemblance to the adult female, but with buff or orange streaks on the head and upperparts, and dark spotting on the underparts.

When identifying the Sooty Thrush, look for its average length of 24–25.5 cm and an average weight of 96 grams. The male's brownish-black plumage, black wings and tail, and the black area between the orange bill and eye are key characteristics. The orange legs and eye ring, along with the pale grey iris, are also distinctive. Females and juveniles are paler, with the juveniles displaying streaks and spotting.

This species thrives in open areas and at the edge of oak forests, typically at altitudes above 2200 meters.

The Sooty Thrush is found exclusively in the highlands of Costa Rica and western Panama.

The Sooty Thrush exhibits behaviors similar to other thrushes, such as the American Robin. It forages on the ground, either alone or in pairs, moving in a series of hops and dashes with frequent pauses. It is known to turn over leaf litter in search of insects and spiders.

23-3-2017 SAN GERARDO DE DOTA, COSTA RICA - SOOTY THRUSH (Turdus nigrescens)

The sooty thrush (Turdus nigrescens ) is a large thrush endemic to the highlands of Costa Rica and western Panama. It was formerly known as the sooty robin.

This is an abundant bird of open areas and oak forest edge normally above 2200 m altitude. It builds a heavy grass-lined cup nest in a tree 2–8 m above the ground, and the female lays two unmarked greenish-blue eggs between March and May.

The sooty thrush resembles other Turdus thrushes in general appearance and habits. It is 24–25.5 cm long, and weighs 96 g on average. The adult male is brownish-black with black wings and tail, and a black area between the orange bill and the eye. The legs and bare eye ring are orange and the iris is pale grey. The female is similar but browner and somewhat paler, and has yellow-orange bare parts. The juvenile resembles the adult female but has buff or orange streaks on the head and upperparts and dark spotting on the underparts.

Two superficially similar relatives share this species' range. The mountain thrush is uniformly brown with dark bare parts, and the clay-colored robin is much paler and yellow-billed.

The sooty thrush behaves like other thrushes such as the American robin. It forages on the ground, singly or in pairs, progressing in hops and dashes with frequent stops. It turns leaf litter seeking insects and spiders, and also eats small fruits, especially Ericaceae and Solanum.

The breeding season song is a gurgling squeaky chuweek chuweek seechrrzit seechrrzit seechrrzit seechrrzit tseeur tseeur tseeur tseeur, and the call is a grating grrrrkk.