A whooper swan swims in the river. [Photo by Fang Aiqin]

The Zhangye National Wetland Park in Gansu province is now bursting in the many shades of autumn, and is welcoming back its star attraction of swan families.

Swans glide gently across the water under the blue sky, occasionally taking flight against the picturesque backdrop of yellow, orange, red and brown trees.

Black swans paddle across the river in Zhangye National Wetland Park. [Photo by Fang Aiqin]