Mute swans fly at a higher altitude than any other bird. They come from Siberia and fly thousands of kilometers. 

In October, the mute swans finally rest in Ili River in China's Xinjiang Uygur Autonomous Region where they can search for food and find their soulmates. Watch this video for the migration story of mute swans. 

(Cover image via VCG)

(If you want to contribute and have specific expertise, please contact us at nature@cgtn.com.)