Migratory white swans spend winter in NE China’s Liaoning

Flocks of swans fly to Daling River on Dec. 11, 2019, in Chaoyang City, northeast China’s Liaoning Province. In recent years, with the improvement of its ecological environment and the awareness of birds, Chaoyang City attracts flocks of swans to spend the winter. (Bai Tiejun/Guangming Picture)