Migratory egrets forage on Fenhe River in Shanxi

An egret catches fish along the banks of the Fenhe River, a tributary of the famous Yellow River in Taiyuan, north China's Shanxi Province, on Dec. 15, 2021. Ecological projects to boost the local environment have drawn more wild birds to the river, making it an ideal winter habitat. [Photo: CNSPHOTO]

An egret catches fish along the banks of the Fenhe River, a tributary of the famous Yellow River in Taiyuan, north China's Shanxi Province, on Dec. 15, 2021. Ecological projects to boost the local environment have drawn more wild birds to the river, making it an ideal winter habitat. [Photo: CNSPHOTO]

A flock of egrets forage for food along the banks of the Fenhe River, a tributary of the famous Yellow River in Taiyuan, north China's Shanxi Province, on Dec. 15, 2021. [Photo: CNSPHOTO]

A flock of egrets forage for food along the banks of the Fenhe River, a tributary of the famous Yellow River in Taiyuan, north China's Shanxi Province, on Dec. 15, 2021. [Photo: CNSPHOTO]