Black-necked cranes are seen in Linzhou County of Lhasa City, capital of southwest China's Tibet Autonomous Region, Jan. 1, 2018. Tibet has become the world's largest winter habitat for critically endangered black-necked cranes. It is currently temporary home to over 8,000 black-necked cranes, around 80 percent of the world's total population.

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

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Xinhua Photo/Zhang Rufeng

Black-necked cranes are seen in Linzhou County of Lhasa City, capital of southwest China's Tibet Autonomous Region, Jan. 1, 2018. Tibet has become the world's largest winter habitat for critically endangered black-necked cranes. It is currently temporary home to over 8,000 black-necked cranes, around 80 percent of the world's total population.

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng

Xinhua Photo/Zhang Rufeng