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Red-crowned cranes are seen at a national nature reserve in Yancheng, east China's Jiangsu Province, Jan. 15, 2018. More than 600 red-crowned cranes migrate here every winter. (Xinhua/Wang Jianmin)
Red-crowned cranes are seen at a national nature reserve in Yancheng, east China's Jiangsu Province, Jan. 15, 2018. More than 600 red-crowned cranes migrate here every winter. (Xinhua/Wang Jianmin)