As spring arrives, so do the migratory birds. The Momoge Wetland in Zhenlai county, Jilin province has welcomed a large number of returning birds. Waves of white and gray cranes, Siberian white cranes and oriental storks ripple through the sky. Observers say tens of thousands of geese, ducks, plovers and sandpipers have now gathered, while red-crowned cranes and oriental storks have already begun nesting and laying eggs.