China (mainland) (NB), Japan (NB), North Korea, Russia (Asian) (B), South Korea (NB), Taiwan (China) (NB).
Vagrant to Hong Kong (China).
Breeds south-eastern Russia (eastern Yakutia, Khabarovsk and Amur), also irregularly in adjacent north-eastern China (northern Heilongjiang); non-breeding mainly eastern China, Korea and Japan.
 
Rarity Status
Currently this species is not classified as a rarity in this country OR information has not been updated.
Population
Estimated population is unknown (2010) and decreasing.