Migratory birds inhabit at mangrove forest of S China's Shenzhen Bay

Egrets are seen on the beach of the Shenzhen Bay at dawn in Shenzhen, south China's Guangdong Province, Nov. 9, 2017. Along the coastal areas of the Shenzhen Bay, a mangrove forest is the habitat for about 100,000 migratory birds of 40 species, some of which are endangered. (Xinhua/Mao Siqian)