How many days does the bird's hatching egg

It takes about 13 days to hatch eggs.This kind of bird breeding is usually in the woods, and the birch forest is usually selected. When breeding, it will migrate. After entering the breeding place, it will start to call for puppets, and then match the nest.The breeding time is generally from May to July. After the nest is done, it will lay eggs. At a time, it can produce 5-7 eggs, but most of the time there are 6 pieces. After a period of time, it can be out of the shell.