Black-headed gulls look for food on Pangong Tso Lake in Ngari Prefecture, southwest China's Tibet Autonomous Region, Oct. 20, 2014. (Xinhua/Wen Tao)
Black-headed gulls look for food on Pangong Tso Lake in Ngari Prefecture, southwest China's Tibet Autonomous Region, Oct. 20, 2014. (Xinhua/Wen Tao)
Black-headed gulls look for food on Pangong Tso Lake in Ngari Prefecture, southwest China's Tibet Autonomous Region, Oct. 20, 2014. (Xinhua/Wen Tao)
Black-headed gulls look for food on Pangong Tso Lake in Ngari Prefecture, southwest China's Tibet Autonomous Region, Oct. 20, 2014. (Xinhua/Wen Tao)
A black-headed gull looks for food on Pangong Tso Lake in Ngari Prefecture, southwest China's Tibet Autonomous Region, Oct. 20, 2014. (Xinhua/Wen Tao)
Black-headed gulls look for food on Pangong Tso Lake in Ngari Prefecture, southwest China's Tibet Autonomous Region, Oct. 20, 2014. (Xinhua/Wen Tao)
