Black-necked cranes fly over the Nianhu Lake wetland of the black-necked crane state nature reserve in Huize County, southwest China's Yunnan Province, Jan. 18, 2017. Black-necked cranes are world endangered animals. (Xinhua/Chen Haining)
Black-necked cranes fly over the Nianhu Lake wetland of the black-necked crane state nature reserve in Huize County, southwest China's Yunnan Province, Jan. 18, 2017. Black-necked cranes are world endangered animals. (Xinhua/Chen Haining)
Black-necked cranes are seen in the Nianhu Lake wetland of the black-necked crane state nature reserve in Huize County, southwest China's Yunnan Province, Jan. 18, 2017. Black-necked cranes are world endangered animals. (Xinhua/Chen Haining)
Black-necked cranes are seen in the Nianhu Lake wetland of the black-necked crane state nature reserve in Huize County, southwest China's Yunnan Province, Jan. 18, 2017. Black-necked cranes are world endangered animals. (Xinhua/Chen Haining)
