Migratory birds fly over the wetland of Yanghe Reservoir in Zhangjiakou City, north China's Hebei Province. The Yanghe Wetland is rich in aquatic plants and has a beautiful environment, which is very suitable for birds to survive and become a great choice for birds to travel north and south, October 11, 2020. /CFP
Migratory birds fly over the wetland of Yanghe Reservoir in Zhangjiakou City, north China's Hebei Province. The Yanghe Wetland is rich in aquatic plants and has a beautiful environment, which is very suitable for birds to survive and become a great choice for birds to travel north and south, October 11, 2020. /CFP