The sooty grouse was the blue grouse until 2006 when the blue grouse was split into two species, the sooty grouse and the dusky grouse. Also Goes By: Mountain Grouse, Sooty Grouse, Dusky, Pine Grouse. In addition, the spruce grouse and Siberian grouse have been considered part of this genus. Dusky or blue grouse. Apparently, it is pretty hard to tell the two species apart, even the professional bird people waited until a DNA test was done to decide that the Blue Grouse was actually two species; the Dusky Grouse and the Sooty Grouse. They’re the same thing, with two sub-species. Depending on who you talk to, you’ll hear people reference either dusky or blue grouse. Blue Grouse divided by two equals Dusky and Sooty Grouse Michael A. Schroeder, Upland Bird Research Biologist Washington Department of Fish and Wildlife P.O. The two species are the dusky grouse (Dendragapus obscurus) and the sooty grouse (Dendragapus fuliginosus). Blue grouse in the Rocky mountains became dusky grouse. The genus Dendragapus contains two closely related species of grouse that have often been treated as a single variable taxon (blue grouse). Blue grouse and dusky grouse are the same thing. Males will be dark in color (the Sooty Grouse will be especially so). Big blue as it happens, is actually two grouse, the sooty grouse of the Pacific West and the dusky grouse of the Rockies; until recent years they were considered one species. "Adults have a long square tail, gray at the end (lighter in the Sooty Grouse). I'm too stubborn to change, so I still call them blue grouse. Box 1077 Bridgeport, W A 98813 email: schromas@dfw.wa.gov The state of Washington has a new species of grouse, at least according to the American Ornithologists Union (Auk, 2006, This large grouse is split into two separate species; the Sooty Grouse of the Sierra Nevada and Pacific Coast Ranges and the Dusky Grouse of the Rocky Mountains. Adults have a long tale that is gray at the end. As nouns the difference between grouse and ptarmigan is that grouse is any of various game birds of the family tetraonidae which inhabit temperate and subarctic regions of the northern hemisphere or grouse can be a cause for complaint while ptarmigan is any of three species of small grouse in the genus lagopus found in subarctic tundra areas of north america and eurasia. However, “blue” grouse are not currently considered a single species, but two – sooty grouse (Dendragapus fuliginous) on the coast and dusky grouse (Dendragapus obscurus)in the interior. Blue grouse in the Cascades and Sierra Nevadas became sooty grouse. The dusky grouse is found in the Rocky Mountains, from the southern Yukon and northern British Columbia , south into northern Arizona and western New Mexico. Several years ago the powers that be divided blue grouse into two subspecies.

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