Black-necked cranes' number exceeds 8,000 in Tibet (3)

Black-necked cranes are seen in Lhunzhub County of Lhasa, southwest China's Tibet Autonomous Region, Dec. 10, 2015. The number of black-necked cranes, a first-level state protected bird, has kept rising to over 8,000 in the past years thanks to a series of protection measures taken in Tibet. (Xinhua/Zhang Rufeng)