Finch and sparrow5/29/2023 ![]() The areas the subspecies breed in rarely overlap during breeding season. Due to its remote habitat, few of its nests have been found, it is rarely spotted, and the population is stable. tephrocotis summers from Montana to the Yukon, while littoralis breeds closer to the coast, from northern California to west-central Alaska. The other taxa: littoralis, tephrocotis, wallowa, and dawsoni are found from the Canadian and American Rockies and migrate south to the western United States. A small number of gray-crowned rosy finches winters on the mainland in South-Central Alaska and visits feeders there. griseonucha permanently resides in the Aleutian Islands and umbrina on the Pribilof Islands. The gray-crowned rosy finch has a wide range and large numbers throughout Alaska, and western Canada and the United States. All rosy finches live in an alpine or tundra environment. The ancestor of the three species of North American rosy finches migrated from Asia. ![]() 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. 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. wallowa has an almost entirely gray head. There is some variability in the amount of grey on the head. They have short black legs and a long forked tail. ![]() The forehead and throat are black the back of the head is grey. Adults are brown on the back and breast and mainly pink on the rest of the underparts and the wings. Within the finch family, the gray-crowned rosy finch is medium-large with a comparatively long notched tail and wing. Grinnell, 1913) eastern California (Sierra Nevada and White Mts). Miller, 1939) breeds northeast Oregon (Wallowa Mts) winters South to west-central Nevada and central-east California. tephrocotis (Swainson, 1832) also known as "brown-cheeked rosy-finch", breeds northern & central Alaska east to northwest Canada (central Yukon, British Columbia, western Alberta) and northwest United States (northwest Montana) winters from southern British Columbia east to southwest Saskatchewan and South Dakota, south to northeast California, Nevada, Utah, western Colorado and northern New Mexico. Baird, 1869) also known as "Hepburn’s rosy-finch", "gray-headed rosy-finch", "gray-cheeked rosy-finch", breeds in south-central Alaska east to western Canada (SW Yukon, NW British Columbia) and western United States from Washington and Oregon (along Cascade Mountains) to northern California (Mt Shasta) winters in southern section of breeding range East to central Montana, western Nevada, northern Utah and central New Mexico. Matthew Island and Pribilof Islands, in Bering Sea. Brandt, 1842) Commander Island, and Aleutian Islands (including Shumagin Island and Semidi Island) east to Alaskan Peninsula non-breeding south to Kodiak Island. ![]() Six subspecies of the gray-crowned rosy finch are now recognized, though proposals for additional subspecies have been recognized. Alternative common names include: Roselin à tête grise (in French), Schwarzstirn-Schneegimpel (in German), and Pinzón Montano Nuquigrís (in Spanish). Along with one Asian rosy finch and two Asian mountain finches, the three North American rosy finches form the mountain finch genus Leucosticte. Recent mitochondrial DNA evidence shows the rosy finches are all indeed very closely related and can be easily confused with one another. australis), all of which were classified as the same species as the Asian rosy finch (L. atrata) and the brown-capped rosy finch (L. ![]() This bird has been thought to form a superspecies with three other rosy finches (also known as mountain finch): black rosy finch (L. The gray-crowned rosy finch was first classified by English ornithologist William John Swainson in 1832. ![]()
0 Comments
Leave a Reply. |