Bangladesh, Bhutan, Brunei Darussalam, Cambodia, China (mainland), India, Indonesia, Japan, Laos, Malaysia, Myanmar, Nepal, North Korea (B), Pakistan, Philippines, Russia (Asian), Singapore, South Korea, Sri Lanka, Taiwan (China), Thailand, Vietnam.
Vagrant to Maldives, Oman, United Arab Emirates.
Breeds from Russian Far East (southern Ussuriland) south to south-eastern China (south to south-western Sichuan, northern Guizhou and northern Fujian) and southern Japan (south-western Honshu, north-western Kyushu); also sporadically in north-eastern India (Cachar Hills, in Assam). Winters in southern and south-eastern Asia.
 
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).