Black-necked cranes are pictured in Namling County of Xigaze City, southwest China's Tibet Autonomous Region, March 29, 2022. (Xinhua/Zhang Rufeng)

LHASA, March 30 (Xinhua) -- Tibet has seen a steady increase in endangered wildlife population, thanks to its continuous efforts over the past decades. The population of black-necked cranes has exceeded 10,000 from 1,000 to 3,000 previously.

Black-necked cranes are pictured in Namling County of Xigaze City, southwest China's Tibet Autonomous Region, March 29, 2022. (Xinhua/Zhang Rufeng)

Black-necked cranes fly in Namling County of Xigaze City, southwest China's Tibet Autonomous Region, March 29, 2022. (Xinhua/Zhang Rufeng)

Black-necked cranes are pictured in Namling County of Xigaze City, southwest China's Tibet Autonomous Region, March 29, 2022. (Xinhua/Zhang Rufeng)

Black-necked cranes fly in Namling County of Xigaze City, southwest China's Tibet Autonomous Region, March 29, 2022. (Xinhua/Zhang Rufeng)

Black-necked cranes are pictured in Namling County of Xigaze City, southwest China's Tibet Autonomous Region, March 29, 2022. (Xinhua/Zhang Rufeng)