There is a saying that "the egg hits the stone". The eggshell looks thin to us and will break when touched, but it is a hard fortress for newly developed chicks, and it is not easy to break out of the shell.

Fortunately, chickens have a secret weapon prepared by their parents. They have a hard little yellow spot. With it, weak chickens can peck through eggshells.

In order to break the shell easily, most chickens will instinctively choose the weakest part of the eggshell to "attack"-the airbag. The airbag is easy to break when pecking, and it doesn't take the chicken any effort to lift the eggshell.

Most chickens will hatch in 12 hours, which is really a long time for them. However, you must not help them peel the eggshells in order to save their energy! In that case, even if the chick can break out of its shell, the umbilical cord on its abdomen will stick tightly to the eggshell, so that the chick will become a weak chick at birth and will be eliminated! It turns out that the process of chicken struggling in its shell is also a process of making its body get congested and grow rapidly. Without this process, its body will be weak.