Mandarin ducks are seen at their winter habitat in Tianhu Lake of Ningqiang County, northwest China's Shaanxi Province, Jan. 17, 2017. (Xinhua/Tao Ming)
Mandarin ducks are seen at their winter habitat in Tianhu Lake of Ningqiang County, northwest China's Shaanxi Province, Jan. 17, 2017. (Xinhua/Tao Ming)