China's rejuvenated wetlands attract spectacular 'bird waves'

The Guanting Reservoir Wetland, located on the border of Beijing and Hebei, is an important stopover site along the east Asian–Australasian flyway for migratory birds.(Photo/China News Service)

Every year, flocks of migratory birds traverse China's major flyways in spectacular waves. More than a natural wonder, it shows how wetland restoration efforts are making habitats healthy and vibrant.