Bangladesh, Bhutan, China (mainland), India, Japan, Mongolia (B), Myanmar, Nepal, Russia (Asian), Russia (Central Asian) (B), South Korea, Sri Lanka, United Arab Emirates (NB) (P).
Vagrant to Bahrain, Belgium, Denmark, Finland, France, Israel, Kuwait, Netherlands Antilles, Oman, Thailand, United Kingdom.
Breeds from southern Russia (eastern Altai Mts) east to Transbaikalia and north-eastern China (western Heilongjiang), south to southern Mongolia and east-central Nei Mongol. Winters mainly in Indian Subcontinent.
 
Population
Estimated population is unknown (2010).