Black-headed gulls are seen at the Fairy Bay Wetland in Gangca County, on the northern shore of Qinghai Lake in Qinghai Province, Aug. 18, 2018. According to local authorities, more than 200,000 migratory birds of 92 species breed at the lake each year. (Photo: China News Service/Li Juan)
Black-headed gulls are seen at the Fairy Bay Wetland in Gangca County, on the northern shore of Qinghai Lake in Qinghai Province, Aug. 18, 2018. According to local authorities, more than 200,000 migratory birds of 92 species breed at the lake each year. (Photo: China News Service/Li Juan)
Black-headed gulls are seen at the Fairy Bay Wetland in Gangca County, on the northern shore of Qinghai Lake in Qinghai Province, Aug. 18, 2018. According to local authorities, more than 200,000 migratory birds of 92 species breed at the lake each year. (Photo: China News Service/Li Juan)
Black-headed gulls are seen at the Fairy Bay Wetland in Gangca County, on the northern shore of Qinghai Lake in Qinghai Province, Aug. 18, 2018. According to local authorities, more than 200,000 migratory birds of 92 species breed at the lake each year. (Photo: China News Service/Li Juan)
Black-headed gulls are seen at the Fairy Bay Wetland in Gangca County, on the northern shore of Qinghai Lake in Qinghai Province, Aug. 18, 2018. According to local authorities, more than 200,000 migratory birds of 92 species breed at the lake each year. (Photo: China News Service/Li Juan)
Black-headed gulls are seen at the Fairy Bay Wetland in Gangca County, on the northern shore of Qinghai Lake in Qinghai Province, Aug. 18, 2018. According to local authorities, more than 200,000 migratory birds of 92 species breed at the lake each year. (Photo: China News Service/Li Juan)