A black-headed gull comes down to fetch food at Caohai Levee of Dianchi Lake in Kunming, capital of southwest China's Yunnan Province, Feb. 6, 2014. Many local citizens come to the levee to view black-headed gulls on Thursday, the last day of the the seven-day break for Spring Festival, or the Chinese Lunar New Year. (Xinhua/Hu Chao)