Tundra swans are seen in the East Dongting Lake Nature Reserve, central China's Hunan Province, Nov. 29, 2016. According to local authorities, nearly 80,000 migrant birds have arrived to spend the winter time in the reserve until now. (Xinhua/Li Ga)
Tundra swans are seen in the East Dongting Lake Nature Reserve, central China's Hunan Province, Nov. 29, 2016. According to local authorities, nearly 80,000 migrant birds have arrived to spend the winter time in the reserve until now. (Xinhua/Li Ga)