On April 25, in the riverside jungle of Zengkou Village, Oujiang Town, Guidong County, a group of egrets played in the treetops.

Nowadays, it is a "golden" period that migratory birds migrate from south to north to escape the heat. Guidong County is China's second largest bird road. Since mid April, tens of thousands of migratory birds have migrated to the North via Guidong every day.

Because of good ecological environment, a large number of migratory birds stop here and complement food during migration, then continue to fly north.