Hybridization between the Dusky Grouse (Dendragapus obscurus) and Sharp-tailed Grouse (Tympanuchus phasianellus) has been rarely documented. The only published record from the wild is of one collected at Osoyoos, British Columbia, in 1906 (Brooks 1907, Lincoln 1950). There is one record of this hybridization between captive birds (McCarthy 2006).