A seminar was held in 2010 to encourage the volunteers to use cameras to record the wildlife they see in daily life, Wu said.
The whooper swan, a second-class State-protected bird, breeds in North China and Russia's Siberia in spring and autumn.
Qinghai Lake has expanded for eight years in a row to 4,402 square kilometers. At an elevation of more than 3,000 meters, it is the largest inland saltwater lake in China and received 1 million visitors this year.
The swans are now the crown jewel of the lake's famous Bird Island, a habitat for varied bird species, which is most plentiful in May.
Challenges remain for smoking ban