A black-necked crane is seen at the state-level protection zone in Lhunzhub County, southwest China's Tibet Autonomous Region, Jan. 3, 2016. Tibet is currently temporary home to 7,000 to 8,000 black-necked cranes, around 70 percent of the world's total, thanks to enhanced conservation efforts and public awareness. (Xinhua/Zhang Rufeng)

Black-necked cranes are seen at the state-level protection zone in Lhunzhub County, southwest China's Tibet Autonomous Region, Jan. 3, 2016. Tibet is currently temporary home to 7,000 to 8,000 black-necked cranes, around 70 percent of the world's total, thanks to enhanced conservation efforts and public awareness. (Xinhua/Zhang Rufeng)

Black-necked crane are seen at the state-level protection zone in Lhunzhub County, southwest China's Tibet Autonomous Region, Jan. 3, 2016. Tibet is currently temporary home to 7,000 to 8,000 black-necked cranes, around 70 percent of the world's total, thanks to enhanced conservation efforts and public awareness. (Xinhua/Zhang Rufeng)