Canada, China (mainland), India, Japan, Kazakhstan, Mongolia, North Korea, Russia (Asian) (B), Russia (Central Asian) (B), Russia (European) (B), South Korea, USA.
Vagrant to Czech Republic, Denmark, Finland, Italy, Lebanon, Poland, Sweden.
Population
Estimated population is unknown (2010).
Siberian Accentor (Prunella montanella) [XC424294]
by Jarek Matusiak from Allaikhovsky District, Sakha Republic, Russian Federation (song)
Siberian Accentor (Prunella montanella) [XC691210]
by Marcel Tenhaeff from Shahe Reservoir, Beijing, China (call)
Subspecies
Forms a species group with Brown Accentor (Prunella fulvescens), Mongolian Accentor (Prunella koslowi), Black-throated Accentor (Prunella atrogularis), Radde's Accentor (Prunella ocularis) and Arabian Accentor (Prunella fagani). Population breeding in north-central part of range (between R Khatanga and R Lena) of uncertain racial identity and probably belongs to nominate subspecies, and tentatively included within it.
The following 2 subspecies are recognised:
montanella (Pallas, 1776) - Breeds extreme north-eastern Europe and western Siberia (from Bol'shezemel'skaya tundra, on western side of Ural Mts) east to R Lena and, in southern Russia, patchily from upper R Ob, upper R Yenisey region (north of Krasnoyarsk) and Altai east to Amur region.
badia Portenko, 1929 - Breeds north-eastern Siberia from R Lena east to Anadyrland, south to western shore of Sea of Okhotsk.