Egrets rest on trees at the Tianxiang Park in Nanchang, east China's Jiangxi Province, May 18, 2016. The Tianxiang Park, an artificial wetland park in Nanchang, has attracted a good many wild migratory birds. In 2000, the park was appointed by WTO as a research center of world migratory birds. (Xinhua/Wan Xiang)
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