A white swan flying over the Pinglu Yellow River Wetland in Pinglu County of north China's Shanxi Province. The wetland is an important winter habitat for swans and a station has been established there to protect the swans. (Xinhua/Xue Jun)
A flock of white swans flying over the Pinglu Yellow River Wetland in Pinglu County of north China's Shanxi Province. (Xinhua/Xue Jun)
White swans living at the Pinglu Yellow River Wetland in Pinglu County of north China's Shanxi Province. (Xinhua/Xue Jun)
White swans living at the Pinglu Yellow River Wetland in Pinglu County of north China's Shanxi Province.(Xinhua/Xue Jun)
Several swans are seen at Gaotai section of Heihe River in northwest China's Gansu Province, on Jan. 2, 2009. As the protection of Heihe wetland increased in Zhangye of Gansu Province, more and more migrant birds including 200 swans arrived at Gaotai section of Heihe River for the winter. (Xinhua/Han Chuanhao)
Several swans are seen at Gaotai section of Heihe River in northwest China's Gansu Province, on Jan. 3, 2009.(Xinhua/Han Chuanhao)
Several swans are seen on the frozen water at Gaotai section of Heihe River in northwest China's Gansu Province, on Jan. 2, 2009. (Xinhua/Han Chuanhao)
