Flocks of whooper swans and other migratory birds feed and fly in the Heihe Wetland National Nature Reserve in Zhangye, northwest China's Gansu Province, Jan. 5, 2025. The morning light reflects each other, presenting a beautiful ecological picture. (Yang Yongwei/Guangming Picture)
Flocks of whooper swans and other migratory birds feed and fly in the Heihe Wetland National Nature Reserve in Zhangye, northwest China's Gansu Province, Jan. 5, 2025. The morning light reflects each other, presenting a beautiful ecological picture. (Yang Yongwei/Guangming Picture)
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