A flock of migratory swans swim on the Luohe River in Luoyang City, central China's Henan Province, Nov. 5, 2012. (Xinhua/Zhang Xiaoli)
A flock of migratory swans fly over Luoyang City, central China's Henan Province, Nov. 5, 2012. (Xinhua/Zhang Xiaoli)
A flock of migratory swans frolic on the Luohe River in Luoyang City, central China's Henan Province, Nov. 5, 2012. (Xinhua/Zhang Xiaoli)
