Migratory swans fly to Guide of NW China's Qinghai for wintering

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Swans are seen in the Yellow River wetland in Guide County, northwest China's Qinghai Province, Dec. 12, 2019. Hundreds of migratory swans flied to Guide for wintering. (Xinhua/Zhang Long)

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Swans are seen in the Yellow River wetland in Guide County, northwest China's Qinghai Province, Dec. 12, 2019. Hundreds of migratory swans flied to Guide for wintering. (Xinhua/Zhang Long)

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Swans are seen in the Yellow River wetland in Guide County, northwest China's Qinghai Province, Dec. 12, 2019. Hundreds of migratory swans flied to Guide for wintering. (Xinhua/Zhang Long)

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Swans are seen in the Yellow River wetland in Guide County, northwest China's Qinghai Province, Dec. 12, 2019. Hundreds of migratory swans flied to Guide for wintering. (Xinhua/Zhang Long)

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Swans are seen in the Yellow River wetland in Guide County, northwest China's Qinghai Province, Dec. 12, 2019. Hundreds of migratory swans flied to Guide for wintering. (Xinhua/Zhang Long)

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Swans are seen in the Yellow River wetland in Guide County, northwest China's Qinghai Province, Dec. 12, 2019. Hundreds of migratory swans flied to Guide for wintering. (Xinhua/Zhang Long)

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Swans are seen in the Yellow River wetland in Guide County, northwest China's Qinghai Province, Dec. 12, 2019. Hundreds of migratory swans flied to Guide for wintering. (Xinhua/Zhang Long)