A brown-headed gull is flying over the Cormorant Island of Qinghai Lake in northwest China's Qinghai Province, May 4, 2014. [Photo/Xinhua]

Themed with "protecting wildlife and constructing a beautiful Qinghai Lake", the 2014 "bird-loving week" of Qinghai Province, northwest China was held on Bird Island of Qinghai Lake. May 4, 2014. Staff members from the Qinghai Lake National Nature Reserve Bureau and Qinghai Lake Scenic Protection Administration distributed identification manuals of wild animal species to the tourists, propagandizing wild birds protection and call upon the whole society to care for the birds.

A brown-headed gull is flying over the Cormorant Island of Qinghai Lake in northwest China's Qinghai Province, May 4, 2014. [Photo/Xinhua]

Tourists are visiting the Birdwatching gallery on the Bird Island of Qinghai Lake in northwest China's Qinghai Province, May 4, 2014. [Photo/Xinhua]

A tourist is photographing the habitat of brown-headed gull on the Bird Island of Qinghai Lake in northwest China's Qinghai Province, May 4, 2014. [Photo/Xinhua]

A staff member from the Qinghai Lake National Nature Reserve Bureau is distributing identification manuals of wild animal species to the tourists on the Bird Island of Qinghai Lake in northwest China's Qinghai Province, May 4, 2014. [Photo/Xinhua]