Swans are seen at a wetland in Sanmenxia City, central China's Henan Province, Feb. 2, 2018. Thousands of migratory swans flied here to spend winter at Sanmenxia Yellow River wetland.(Xinhua/Sun Zhiping)
Migratory swans spend winter at Sanmenxia Yellow River wetland in C China
Source: Xinhua| 2018-02-02 20:47:03|Editor: Lifang
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