The species' range includes the mountains of the eastern Tibetan Plateau in Gansu, southern Qinghai, Yunnan, and Sichuan in China; in Bhutan; in Sikkim in India; and in northern Myanmar. The nominate subspecies O.t. thibetana occurs in southern Qinghai, western Sichuan, southeastern Tibet, and northwestern Yunnan; O.t. nangquenica occurs in Tibet; O.t. sacraria occurs in western Sichuan; O.t. osgoodi occurs in northeastern Myanmar; O.t. sikimaria occurs in Sikkim; and O.t. xunhuaensis occurs in eastern Qinghai.