Barheaded geese are seen in Subei Mongolian Autonomous County, northwest China's Gansu Province, June 7, 2015. (Photo: Xinhua/Dai Youchun)
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Barheaded geese are seen in Subei Mongolian Autonomous County, northwest China's Gansu Province, June 7, 2015. (Photo: Xinhua/Dai Youchun)