Every October, black-necked cranes migrate from their breeding grounds to the middle reaches of the Yarlung Zangbo River valley in Tibet to spend the winter. Recently, a flock of black-necked cranes were seen strolling along the Lhasa River. 

As Tibet has stepped up efforts to protect biodiversity, the population of rare wild animals has shown a restorative growth, with the number of black-necked cranes increasing from less than 3,000 to more than 10,000.