Origin: China, Japan, Kazakhstan, Korea, North Korea, Mongolia, Russia. Travelers: Lao People's Democratic Republic, Russian Federation, Thailand, Turkmenistan, Uzbekistan. In China, it mainly breeds in Heilongjiang Province, Jilin Province and Inner Mongolia Autonomous Region; Overwintering in the middle and lower reaches of the Yangtze River and coastal provinces such as Shandong, Jiangsu, Fujian and Guangdong is occasionally found in Taiwan Province Province, but a few overwintering are also found in Liaoning, Hebei and other provinces; During the migration, it was found in Altai Mountain in northern Xinjiang, Tianshan Mountain in western China, Qaidam Basin in Qinghai, Hebei and Henan provinces.