Migratory Siberian cranes make a stop at the Momoge National Nature Reserve in Zhenlai County, Northeast China's Jilin Province. The reserve is one of China's main crane protection bases, and an important stopover for Siberian cranes migrating between Poyang Lake in China and Serbia. More than 2,000 Siberian cranes, about half of the world's total population, have been observed there since mid-March. Local authorities have increased environmental protection measures in the reserve. (Photo/cnjiwang.com)
