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A spectacular sight is unfolding along the Qiupu River in east China's Anhui Province, as tens of thousands of egrets gather before their southward migration for the winter. The birds are sensitive to water quality and their environment, and their presence is seen as a sign of a healthy ecosystem. Years of environmental protection and water conservation have helped improve local habitats, making the area an attractive stopover for migrating birds.
A spectacular sight is unfolding along the Qiupu River in east China's Anhui Province, as tens of thousands of egrets gather before their southward migration for the winter. The birds are sensitive to water quality and their environment, and their presence is seen as a sign of a healthy ecosystem. Years of environmental protection and water conservation have helped improve local habitats, making the area an attractive stopover for migrating birds.