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Three fledgling red-crowned cranes are perched at a national nature reserve zone in Baicheng, Northeast 皇冠体育app’s Jilin province, Sept 20, 2010. After years of ecological rehabilitation, the number of cranes in the zone has reached 100. They include red-crowned cranes, grey cranes, white-naped cranes, demoiselle cranes and two other species. [Photo/Xinhua]
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