Leucosticte tephrocotis
| Gray-crowned rosy finch | |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Passeriformes |
| Family: | Fringillidae |
| Genus: | Leucosticte |
| Species: | L. tephrocotis |
| Binomial name | |
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Leucosticte tephrocotis (Swainson, 1832) |
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The gray-crowned rosy finch, or gray-crowned rosy-finch, (Leucosticte tephrocotis) is a species of passerine bird in the family Fringillidae native to Alaska, western Canada, and the north-western United States. Due to its remote and rocky alpine habitat it is rarely seen. There are currently six recognized subspecies. It is one of four species of rosy finches.
The gray-crowned rosy finch was first classified by English ornithologist William John Swainson in 1832. This bird has been thought to form a superspecies with three other rosy finches (also known as mountain finch): black rosy finch (L. atrata) and the brown-capped rosy finch (L. australis), all of which were classified as the same species as the Asian rosy finch (L. arctoa) from 1983-1993. Recent mitochondrial DNA evidence shows the rosy finches are all indeed very closely related and can be easily confused with one another. Along with four Asian rosy finches, the three North American rosy finches form the mountain finch genus Leucosticte. Alternative common names include: Roselin à tête grise (in French), Schwarzstirn-Schneegimpel (in German), and Pinzón Montano Nuquigrís (in Spanish).
Six subspecies of the gray-crowned rosy finch are now recognized, though proposals for additional subspecies have been recognized.
Within the finch family, the gray-crowned rosy finch is medium-large with a comparatively long notched tail and wing. Adults are brown on the back and breast and mainly pink on the rest of the underparts and the wings. The forehead and throat are black; the back of the head is grey. They have short black legs and a long forked tail. There is some variability in the amount of grey on the head. Adult females and juveniles are similar. Overall length is 140 to 160 mm (5.5–6.3 in), wingspan 33 mm (1.3 in), and weight 22 to 26 g (0.78–0.92 oz).L. t. wallowa has an almost entirely gray head. The Pribilof and Aleutian subspecies have a length of 170 to 210 mm (6.7–8.3 in) and weight of 42 to 60 g (1.5–2.1 oz), about twice the size of the other subspecies. The black rosy finch has a black instead of brown body and the brown-capped rosy finch is a lighter brown and lacks the gray face patch.
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Wikipedia