Grey herons nest along the Yellow River in northwest China(1/4)

Aerial photo shows trees in the Yellow River's wetlands becoming a gathering place for grey herons in Haidong City, northwest China's Qinghai Province. (Photo provided to China News Service)

As temperatures gradually rise, a group of special "guests", grey herons, have arrived along the Yellow River, adding a beautiful ecological touch to the early spring landscape.

Grey herons build a nest with its partners in Haidong City, northwest China's Qinghai Province. (Photo provided to China News Service)

Grey herons build their new homes in the riverside forests in Haidong City, northwest China's Qinghai Province. (Photo provided to China News Service)

A grey heron rests on the branches in Haidong City, northwest China's Qinghai Province.(Photo provided to China News Service)