Little swans are seen in the East Dongting Lake Nature Reserve, central China's Hunan Province, March 1, 2017. Migrant birds that have arrived here to spend the winter are ready to fly back to north recently. (Xinhua/Li Ga)
Little swans are seen in the East Dongting Lake Nature Reserve, central China's Hunan Province, March 1, 2017. Migrant birds that have arrived here to spend the winter are ready to fly back to north recently. (Xinhua/Li Ga)