Conscientious team assists birds in their search for food

Zhao Yajie observes Oriental storks at the Yellow River Delta National Nature Reserve. Millions of migratory birds start arriving at the Yellow River Delta National Nature Reserve in Dongying, Shandong province, in mid-October. "We analyze the droppings at our laboratories to see whether the birds are carrying flu," Zhao said. "This system is very helpful, especially when we walk among reeds growing more than 2 meters high in the wetlands," Zhao said.