![](http://www.ecns.cn/hd/2020/03/12/648e234416e9466883f92f0f2668d17b.jpg)
Photo taken on March 11, 2020 shows black-necked cranes on the northern bank of Yarlung Zangbo River in Shannan City, southwest China's Tibet Autonomous Region. (Xinhua/Jigme Dorje)
![](http://www.ecns.cn/hd/2020/03/12/07fb74edc4144d5fb49c911d3028bbbb.jpg)
Photo taken on March 11, 2020 shows black-necked cranes on the northern bank of Yarlung Zangbo River in Shannan City, southwest China's Tibet Autonomous Region. (Xinhua/Jigme Dorje)
![](http://www.ecns.cn/hd/2020/03/12/6ed0c921b4e741649f1e2cf824e5f52d.jpg)
Photo taken on March 11, 2020 shows black-necked cranes on the northern bank of Yarlung Zangbo River in Shannan City, southwest China's Tibet Autonomous Region. (Xinhua/Jigme Dorje)
![](http://www.ecns.cn/hd/2020/03/12/59a716c09715463cb2a96253a5cad032.jpg)
Photo taken on March 11, 2020 shows black-necked cranes on the northern bank of Yarlung Zangbo River in Shannan City, southwest China's Tibet Autonomous Region. (Xinhua/Jigme Dorje)
![](http://www.ecns.cn/hd/2020/03/12/7a5a71c3342840f5885a4d9a8c60c547.jpg)
Photo taken on March 11, 2020 shows black-necked cranes on the northern bank of Yarlung Zangbo River in Shannan City, southwest China's Tibet Autonomous Region. (Xinhua/Jigme Dorje)