It is the season for black-necked cranes to migrate to lakeside marshes far beyond human touch in northern Tibet, China for reproduction.
The birds come to southwest China's Tibet each October and reproduce between mid-March and late April each year.
Tibet has been making increasing efforts to protect wild animals over the past few decades. The population of the rare crane has increased from less than 3,000 in 1995 to around 8,000 in recent years.
Black-necked cranes mainly live in the highlands of China, India, Bhutan, and Nepal. Tibet is home to about 80 percent of the world's total.