Science Fair Project Encyclopedia
Dark-throated Thrush
The Dark-throated Thrush (Turdus ruficollis) is a passerine bird in the thrush family. It has two races: T. r. atrogularis, the Black-throated Thrush, and T. r. ruficollis, the Red-throated Thrush. These are sometimes considered different species. The Dark-throated Thrush is a migratory Asian taiga species, while the ruficollis variant breeds further east, but the ranges overlap.
These are large thrushes with a plain grey back and reddish underwings. The adult male atrogularis has a black throat, while ruficollis has a red throat. Females and young birds lack the bib, but have black-streaked underparts.
This bird species is a rare vagrant to western Europe. Most visitors are of the black-throated form.
Last updated: 10-23-2005 23:21:11
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details