How big can Beylebird can have eggs

The birds need more than three years before they can have eggs.It usually starts from the end of March. At first, it will be shouted on the ground. After attracting the opposite sex and pairing, it will start to build a nest.The nest acupoint is generally built in the grass, and the shape is cup.By May to July, the female birds will start laying their eggs. They will produce 4-5 pieces each time. The color is light brown or white. After 15 days, the young birds will be hatched.