A flock of birds fly in the Jingxin Wetland in Hunchun City, Northeast China’s Jilin Province, March 21, 2016. More than 100,000 geese stopped off at the wetland that runs along the China-Russia border during their migration back to Siberia. The wetland is also a habitat for many other kinds of birds with first-grade State protection, including the red-crowned crane, Chinese merganser and white-tailed sea eagle. (Photo/CFP)
