Dendragapus

Dendragapus
	Male dusky grouse displaying, Yellowstone NP; note purple air sac and red eye wattle.
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Galliformes
Family:	Phasianidae
Tribe:	Tetraonini
Genus:	Dendragapus; Elliot, 1864
Type species
	Tetrao obscurus;
Species
	Dusky grouse Dendragapus obscurus; Sooty grouse Dendragapus fuliginosus
Synonyms
	Palaeotetrix

The genus Dendragapus contains two closely related species of grouse that have often been treated as a single variable taxon (blue grouse). The two species are the dusky grouse (Dendragapus obscurus) and the sooty grouse (Dendragapus fuliginosus).^[1] In addition, the spruce grouse and Siberian grouse have been considered part of this genus.

^ Banks, R. C.; Cicero, C.; Dunn, J. L.; Kratter, A. W.; Rasmussen, P. C.; Remsen, J. V. Jr.; Rising, J. D.; Stotz, D. F. (2006). "Forty-seventh Supplement to the American Ornithologists' Union Check-list of North American Birds" (PDF). The Auk. 123 (3): 926–936. doi:10.1642/0004-8038(2006)123[926:FSTTAO]2.0.CO;2. ISSN 0004-8038. Retrieved 2007-09-16.

[AOU-1] Banks, R. C.; Cicero, C.; Dunn, J. L.; Kratter, A. W.; Rasmussen, P. C.; Remsen, J. V. Jr.; Rising, J. D.; Stotz, D. F. (2006). "Forty-seventh Supplement to the American Ornithologists' Union Check-list of North American Birds" (PDF). The Auk. 123 (3): 926–936. doi:10.1642/0004-8038(2006)123[926:FSTTAO]2.0.CO;2. ISSN 0004-8038. Retrieved 2007-09-16.

[1]