A staff member sprinkles corns at a feeding area in the Yellow River Wetland Reserve in Sanmenxia City, central China's Henan Province, Jan. 5, 2013. The Yellow River Wetland Reserve of Sanmenxia, one of China's three major habitats for swans to live through winter, has kept on feeding swans each winter since 2008 so as to better protect these birds. (Xinhua/Wang Song)
