Migratory birds rest and feed in wetland of NW China's Gansu

Flocks of migratory birds such as swans and bar-headed geese rest and feed in the lake water of Zhangye National Wetland Park in northwest China's Gansu Province, Nov 6, 2023. In recent years, through comprehensive management of mountains, rivers, forests, fields, lakes, grass and sand, the ecological environment of Heihe wetland has been continuously optimized, providing a good natural ecological environment for wintering migratory birds to live and reproduce. (Yang Yongwei/Guangming Picture)