Red-crowned cranes fly at a national nature reserve in Yancheng, east China's Jiangsu Province, Feb. 15, 2017. (Xinhua/Gao Feng) 
Red-crowned cranes are seen at a national nature reserve in Yancheng, east China's Jiangsu Province, Feb. 15, 2017. (Xinhua/Gao Feng) 
Red-crowned cranes are seen at a national nature reserve in Yancheng, east China's Jiangsu Province, Feb. 16, 2017. (Xinhua/Gao Feng) 
Red-crowned cranes fly at a national nature reserve in Yancheng, east China's Jiangsu Province, Feb. 15, 2017. (Xinhua/Gao Feng) 
Red-crowned cranes fly at a national nature reserve in Yancheng, east China's Jiangsu Province, Feb. 15, 2017. (Xinhua/Gao Feng) 
Red-crowned cranes are seen at a national nature reserve in Yancheng, east China's Jiangsu Province, Feb. 15, 2017. (Xinhua/Gao Feng) 
A red-crowned crane is seen at a national nature reserve in Yancheng, east China's Jiangsu Province, Feb. 15, 2017. (Xinhua/Gao Feng) 
A red-crowned crane is seen at a national nature reserve in Yancheng, east China's Jiangsu Province, Feb. 15, 2017. (Xinhua/Gao Feng) 
A red-crowned crane is seen at a national nature reserve in Yancheng, east China's Jiangsu Province, Feb. 14, 2017. (Xinhua/Gao Feng) 
Red-crowned cranes fly at a national nature reserve in Yancheng, east China's Jiangsu Province, Feb. 14, 2017. (Xinhua/Gao Feng) |
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