Bhutan, Cambodia, China (mainland) (B), Hong Kong (China), India, Japan (B), Kazakhstan (B), Laos, Mongolia (B), Myanmar, Nepal, North Korea (B), Philippines, Russia (Asian) (B), Russia (Central Asian) (B), Russia (European) (B), South Korea, Taiwan (China), Thailand, Vietnam.
Vagrant to Brunei Darussalam, Canada, Denmark, Egypt, Finland, Germany, Iceland, Italy, Malaysia, Palau, Sweden, United Kingdom, USA.
Central Ural Mts and Siberia east to Anadyr, Kamchatka, Commander Is, south to northern Mongolia, northern Korea, northern Japan and Kuril Is, also central China (north-eastern Qinghai, south-western Gansu, northern Sichuan). Non-breeding southern and south-eastern Asia, Taiwan and Philippines.
Population
Estimated population is unknown (2010).
Siberian Rubythroat (Calliope calliope) [XC758075]
by from That Luang lake & fields, Vientiane Prefecture, Laos (?)
Siberian Rubythroat (Calliope calliope) [XC382145]
by Phil Gregory from Tankhoy, Kabanskiy rayon, Buryatiya Republits, Russian Federation (song)
Subspecies
Sometimes placed in genus Erithacus. Vocalizations very similar to those of Himalayan Rubythroat (Calliope pectoralis), and apparent intermediacy of subspecies tschebaiewi of Himalayan Rubythroat (Calliope pectoralis) suggests that a single species may be involved. Geographical variation weak and clinal. Proposed eastern subspecies camtschatkensis and beicki considered unwarranted.
The following 3 subspecies are recognised:
calliope (Pallas, 1776) - Siberia to Japan; > to south-eastern Asia, Philippines and Palau Is.
BirdLife International Species Factsheet