
Black-headed gulls rest on the Dianchi lake in Kunming, capital of southwest China's Yunnan Province, Oct. 28, 2015. More than 3,000 black-headed gulls flew to Kuming from Siberia recently. (Xinhua/Lin Yiguang)

Black-headed gulls rest on the Dianchi lake in Kunming, capital of southwest China's Yunnan Province, Oct. 28, 2015. More than 3,000 black-headed gulls flew to Kuming from Siberia recently. (Xinhua/Lin Yiguang)