A tern flies over the Gahai Lake wetland in Luqu County of the Tibetan Autonomous Prefecture of Gannan, northwest China's Gansu Province, July 7, 2023. (Xinhua/Chen Bin)
Bar-headed geese are pictured in the Gahai Lake wetland in Luqu County of the Tibetan Autonomous Prefecture of Gannan, northwest China's Gansu Province, July 7, 2023. (Xinhua/Zhang Keren)
Bar-headed geese are pictured in the Gahai Lake wetland in Luqu County of the Tibetan Autonomous Prefecture of Gannan, northwest China's Gansu Province, July 7, 2023. (Xinhua/Fang Xin)
A ferruginous duck is pictured in the Gahai Lake wetland in Luqu County of the Tibetan Autonomous Prefecture of Gannan, northwest China's Gansu Province, July 7, 2023. (Xinhua/Fang Xin)
Bar-headed geese are pictured in the Gahai Lake wetland in Luqu County of the Tibetan Autonomous Prefecture of Gannan, northwest China's Gansu Province, July 7, 2023. (Xinhua/Chen Bin)
Chicks of bar-headed goose are pictured in the Gahai Lake wetland in Luqu County of the Tibetan Autonomous Prefecture of Gannan, northwest China's Gansu Province, July 7, 2023. (Xinhua/Chen Bin)
A tern forages on the Gahai Lake wetland in Luqu County of the Tibetan Autonomous Prefecture of Gannan, northwest China's Gansu Province, July 7, 2023. (Xinhua/Zhang Keren)
A tern is pictured in the Gahai Lake wetland in Luqu County of the Tibetan Autonomous Prefecture of Gannan, northwest China's Gansu Province, July 7, 2023. (Xinhua/Chen Bin)
Bar-headed geese are pictured in the Gahai Lake wetland in Luqu County of the Tibetan Autonomous Prefecture of Gannan, northwest China's Gansu Province, July 7, 2023. (Xinhua/Chen Bin)
A tern flies over the Gahai Lake wetland in Luqu County of the Tibetan Autonomous Prefecture of Gannan, northwest China's Gansu Province, July 7, 2023. (Xinhua/Chen Bin)
A tern flies over the Gahai Lake wetland in Luqu County of the Tibetan Autonomous Prefecture of Gannan, northwest China's Gansu Province, July 7, 2023. (Xinhua/Chen Bin)
Bar-headed geese are pictured in the Gahai Lake wetland in Luqu County of the Tibetan Autonomous Prefecture of Gannan, northwest China's Gansu Province, July 7, 2023. (Xinhua/Chen Bin)
A ferruginous duck swims in the Gahai Lake wetland in Luqu County of the Tibetan Autonomous Prefecture of Gannan, northwest China's Gansu Province, July 7, 2023. (Xinhua/Zhang Keren)
A cormorant flies over the Gahai Lake wetland in Luqu County of the Tibetan Autonomous Prefecture of Gannan, northwest China's Gansu Province, July 7, 2023. (Xinhua/Chen Bin)
A tern flies over the Gahai Lake wetland in Luqu County of the Tibetan Autonomous Prefecture of Gannan, northwest China's Gansu Province, July 7, 2023. (Xinhua/Zhang Keren)
