Bangladesh, Bhutan, Brunei Darussalam, Cambodia, China (mainland), India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Pakistan, Singapore, Thailand, Vietnam.
Vagrant to Iran [Islamic Republic of].
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).
thalassinus Swainson, 1838 - Breeds Himalayas from northern Pakistan east, discontinuously, to north-eastern India (Arunachal Pradesh, Assam, Meghalaya), central and southern China (southern Xizang east to southern Shaanxi and Hubei, south to Yunnan and Guangdong), Myanmar, Thailand (except central and south) and Indochina. Non-breeding south to central and southern India, Bangladesh, central Myanmar, central Thailand and south-eastern China.
thalassoides (Cabanis, 1850) - Southern Myanmar (southern Tenasserim), southern Thailand, Peninsular Malaysia, Sumatra and Borneo.