1831) (southern hazel grouse) T. b. bonasia (Linnaeus 1758) (northern hazel grouse) T. b. griseonota Salomonsen 1947 T. b. sibiricus Buturlin 1916 (Siberian hazel grouse) T. b. kolymensis Buturlin 1916 T. b. amurensis Riley 1916 (Amur hazel grouse) T. b. yamashinai Momiyama 1928 T. b. vicinitas Riley 1915 (Hokkaido hazel grouse) Genus Centrocercus Swainson 1832 (sage grouse) Greater sage-grouse, Centrocercus urophasianus (Bonaparte 1827) Gunnison sage-grouse, Centrocercus minimus Young et al. 2000 Genus Dendragapus Elliot 1864 †Dendragapus gilli (Shufeldt 1891) Brodkorb 1964 †Dendragapus lucasi Jehl 1969 Dusky grouse, Dendragapus obscurus (Say 1822) D. o. richardsonii (Douglas 1829) (Richardson's dusky grouse) D. o. pallidus Swarth 1931 (Oregon dusky grouse) D. o. oreinus Behle & Selander 1951 (Great Basin dusky grouse) D. o. obscurus (Say 1822) (dusky blue grouse) Sooty grouse, Dendragapus fuliginosus (Ridgway 1873) D. f. sitkensis Swarth 1921 (Sitkan sooty grouse) D. f. fuliginosus (Ridgway 1873) D. f. sierrae Chapman 1904 (Sierra sooty grouse) D. f. howardi Dickey & van Rossem 1923 (Mount Pinos sooty grouse) Genus Tympanuchus Gloger 1841 (prairie grouse) †Tympanuchus lulli Shuefeldt 1915 †Tympanuchus stirtoni Miller 1944 †Tympanuchus lurasi (Shufeldt 1891) †Tympanuchus nanus (Shufeldt 1892) Lesser prairie chicken Tympanuchus pallidicinctus (Ridgway 1873) Greater prairie chicken, Tympanuchus cupido (Linnaeus 1758) Attwater's prairie chicken, T. c. attwateri Bendire 1893 T. c. pinnatus (Brewster 1885) Heath Hen, T. c. cupido (Linnaeus 1758) (extinct, 1932) Sharp-tailed grouse, Tympanuchus phasianellus (Linnaeus 1758) T. p. caurus (Friedmann 1943) (Alaskan sharp-tailed grouse) T. p. kennicotti (Suckley 1861) (Mackenzie sharp-tailed grouse) T. p. phasianellus (Linnaeus 1758) (northern sharp-tailed grouse) Columbian sharp-tailed grouse, T. p. columbianus (Ord 1815) New Mexico sharp-tailed grouse, †T. p. hueyi Dickerman & Hubbard 1994 T. p. jamesi (Lincoln 1917) (plains sharp-tailed grouse) T. p. campestris (Ridgway 1884) (prairie sharp-tailed grouse) Genus Lagopus Brisson 1760 (ptarmigans) †Lagopus atavus (Jánossy 1974a) †Lagopus balcanicus Boev 1995 White-tailed ptarmigan, Lagopus leucura (Richardson 1831) L. l. peninsularis Chapman 1902 (Kenai white-tailed ptarmigan) L. l. leucura (Richardson 1831) (northern white-tailed ptarmigan) L. l. rainierensis Taylor 1920 (Rainier white-tailed ptarmigan) L. l. saxatilis Cowan 1939 (Vancouver white-tailed ptarmigan) L. l. altipetens Osgood 1901 (southern white-tailed ptarmigan) Willow ptarmigan, Lagopus lagopus (Linnaeus 1758) †L. l. noaillensis Mourer-Chauviré 1975 Red grouse, L. l. scoticus (Latham 1787) L. l. variegata Salomonsen 1936 (Trondheim willow ptarmigan) L. l. lagopus (Linnaeus 1758) (Lapland willow ptarmigan) L. l. rossica Serebrovski 1926 (southern willow ptarmigan) L. l. koreni Thayer & Bangs 1914 (North Siberian willow ptarmigan)