More brids fly to Qinghai Lake as temperature rises, according to Qinghai Lake National Reserves Bureau and as expected, a total of 100,000 birds will propagate from April to May.

With the temperature rising, the ice of Qinghai Lake melts 12 days ahead of the average melting time.

"The number of birds is increasing," Wu Yonglin, an official from Qinghai Lake National Reserves Bureau said,"a total of 38,900 birds of 30 kinds are found in a six-day tour check."