
Wild swans flock to the Bayanbulak National Nature Reserve for nesting, Xinjiang Uygur Autonomous Region. (Photo/China News Service)

A swan sits on a nest at the Bayanbulak National Nature Reserve for nesting, Xinjiang Uygur Autonomous Region. (Photo/China News Service)

A swan sits on a nest at the Bayanbulak National Nature Reserve for nesting, Xinjiang Uygur Autonomous Region. (Photo/China News Service)