The photo shows tundra swans flying over the Donggu Lake Wetland. In early winter, flocks of tundra swans have migrated to the Donggu Lake Wetland in Yueyang's Qu Yuan Management Area on the lakeside of Dongting Lake for wintering. In recent years, the management area has successively implemented projects such as returning farmland to forest, returning farmland to wetland, dredging ditches, and carrying out natural restoration. A series of measures have been taken to restore damaged small and micro wetlands. Thanks to these efforts, an increasing number of migratory birds flock to the wetland for wintering. (Photo/Cao Zhengping and Song Zhengjun)

The photo shows tundra swans in the Donggu Lake Wetland. In early winter, flocks of tundra swans have migrated to the Donggu Lake Wetland in Yueyang's Qu Yuan Management Area on the lakeside of Dongting Lake for wintering. In recent years, the management area has successively implemented projects such as returning farmland to forest, returning farmland to wetland, dredging ditches, and carrying out natural restoration. A series of measures have been taken to restore damaged small and micro wetlands. Thanks to these efforts, an increasing number of migratory birds flock to the wetland for wintering. (Photo/Cao Zhengping and Song Zhengjun)

The photo shows tundra swans in the Donggu Lake Wetland. In early winter, flocks of tundra swans have migrated to the Donggu Lake Wetland in Yueyang's Qu Yuan Management Area on the lakeside of Dongting Lake for wintering. In recent years, the management area has successively implemented projects such as returning farmland to forest, returning farmland to wetland, dredging ditches, and carrying out natural restoration. A series of measures have been taken to restore damaged small and micro wetlands. Thanks to these efforts, an increasing number of migratory birds flock to the wetland for wintering. (Photo/Cao Zhengping and Song Zhengjun)

The photo shows tundra swans flying over the Donggu Lake Wetland. In early winter, flocks of tundra swans have migrated to the Donggu Lake Wetland in Yueyang's Qu Yuan Management Area on the lakeside of Dongting Lake for wintering. In recent years, the management area has successively implemented projects such as returning farmland to forest, returning farmland to wetland, dredging ditches, and carrying out natural restoration. A series of measures have been taken to restore damaged small and micro wetlands. Thanks to these efforts, an increasing number of migratory birds flock to the wetland for wintering. (Photo/Cao Zhengping and Song Zhengjun)

The photo shows tundra swans in the Donggu Lake Wetland. In early winter, flocks of tundra swans have migrated to the Donggu Lake Wetland in Yueyang's Qu Yuan Management Area on the lakeside of Dongting Lake for wintering. In recent years, the management area has successively implemented projects such as returning farmland to forest, returning farmland to wetland, dredging ditches, and carrying out natural restoration. A series of measures have been taken to restore damaged small and micro wetlands. Thanks to these efforts, an increasing number of migratory birds flock to the wetland for wintering. (Photo/Cao Zhengping and Song Zhengjun)

The photo shows tundra swans flying over the Donggu Lake Wetland. In early winter, flocks of tundra swans have migrated to the Donggu Lake Wetland in Yueyang's Qu Yuan Management Area on the lakeside of Dongting Lake for wintering. In recent years, the management area has successively implemented projects such as returning farmland to forest, returning farmland to wetland, dredging ditches, and carrying out natural restoration. A series of measures have been taken to restore damaged small and micro wetlands. Thanks to these efforts, an increasing number of migratory birds flock to the wetland for wintering. (Photo/Cao Zhengping and Song Zhengjun)