Breeds in eastern China (from extreme southern Gansu east to Jiangsu, south to eastern Yunnan, Guangxi, Guangdong and Fujian), Taiwan, and northeastern Vietnam; northern populations migratory, wintering from southeastern China to Thailand and central Indochina
hainanus
Hainan (s China)
williamsoni
Southern Thailand and east coast of northern and central Thai-Malay Peninsula
erwini
Coastal forests of the western and southeastern Thai-Malay Peninsula, of Sumatra, the Riau Islands, Bangka, and the Natuna Islands; population of coastal western Borneo provisionally assigned here, but possibly a distinct taxon
salvadorii
-
Enggano and Mega islands (off w Sumatra)
Endemic status
Sound Guide
Comment
Introduced to Mexico. Established in Ensenada, Baja California.
