China (mainland), Japan, Mongolia, Myanmar, North Korea (B), Philippines, Russia (Asian), South Korea, Taiwan (China), Vietnam.
Vagrant to Northern Mariana Islands, Thailand.
Breeds south-eastern Transbaikalia east to south-eastern Russia (R Ussuri), south to central and eastern Mongolia, northern China (east from eastern Qinghai and Sichuan), Korea, southern Sakhalin I, Japan and southern Kuril Is. Non-breeding southern China (including Hainan I and Hong Kong) and Taiwan.
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).
BirdLife International Species Factsheet