Understand
Qinghai Lake, in the northeast part of the province, is the largest inland saltwater lake in China. Both the Mongolian name and the Tibetan name mean 'Blue Lake'. The 0.8 sq-km Bird Island, on the western edge of the lake, is a paradise for more than 100,000 migratory birds, including bar-headed geese, brown-headed gulls, swans, and wild ducks. May through October is the best time for bird-watching.