Since 2000, Guo Liming – a keen photographer from the city of Baotou, in North China's Inner Mongolia autonomous region – has been spending his spare time photographing birds and other wildlife in the Baotou Yellow River Wetland and rescuing injured animals. As a result, he has recorded over 300 kinds of birds over the past two decades. [Photo provided to chinadaily.com.cn]

Birds take off from a river in the Baotou Yellow River Wetland. [Photo provided to chinadaily.com.cn]

During a serene moment of the day birds gather on the water, photographed by Guo. [Photo provided to chinadaily.com.cn]

A tender wildlife moment is captured on film by Guo. [Photo provided to chinadaily.com.cn]