The reason why the bird does not hatch eggs

Belled bird does not hatch eggs because the eggs are stained with other odors.In March, the bird began to match, looking for a spouse by singing, and then began to build a nest.Generally, the nest is built on the grass, and the grass leaves and fine artemisia stunts are mostly made.This bird can produce 4-5 eggs each, the color is light brown or white, and there are fine spots on it. Usually after 15 days, the chicks will be born.