Early winter has seen thousands of white swans from Siberia migrating to a wetland near the Yellow River in Pinglu county, Yuncheng city, north China's Shanxi Province. The wetland, covering an area of more than 6,000 hectares, has become a major habitat for the swans to overwinter, as it has small temperature fluctuations and provides a rich source of food for the birds.

Photo shows white swans at a wetland near the Yellow River in Pinglu county, Yuncheng city, north China's Shanxi Province. 

Photo shows white swans at a wetland near the Yellow River in Pinglu county, Yuncheng city, north China's Shanxi Province. 

Photo shows white swans at a wetland near the Yellow River in Pinglu county, Yuncheng city, north China's Shanxi Province. 

Photo shows white swans at a wetland near the Yellow River in Pinglu county, Yuncheng city, north China's Shanxi Province.