DASHANBAO, Feb. 28, 2016 -- Volunteer Dong Yinglan casts food to black-necked cranes at Dashanbao Black-necked Crane Nature Reserve , southwest China's Yunnan Province, Feb. 25, 2016. According to Dashanbao Black-necked Crane Nature Reserve, there were more than 1,100 black-necked cranes living through the winter here. Black-necked crane is evaluated as Vulnerable on the IUCN Red List of Threatened Species. (Xinhua/Hu Chao)