Sanmenxia: Winter refuge for Siberian white swans

Thousands of Siberian white swans take to the water at the National Wetland Park in Sanmenxia, Henan Province, December 19, 2017. With recent improvements in the ecological environment on the Sanmenxia Yellow River Reservoir, an increasing number of white swans have been migrating from Siberia, turning the reservoir into a winter home for the birds. [Photo: VCG]