Migrant birds seen at national nature reserve in SW China's Yunnan

Black-necked cranes fly over the National Nature Reserve of Black Necked Cranes in Huize County of Qujing City, southwest China's Yunnan Province, March 2, 2018. Each year a good many black-necked cranes and other migrant birds chose to spend winter on the wetlands at the reserve here due to its sound environment. (Xinhua/Hu Chao)