Flocks of black-necked cranes seen in Huize, NE Yunnan

A flock of cranes fly over the Black-necked Cranes National Nature Reserve in Huize County of Qujing City, southwest China's Yunnan Province, Nov. 20, 2020. Large numbers of migratory birds including black-necked cranes and grey cranes flied here for wintering. (Xinhua/Hu Chao)