Brooding
No
Chicks get nourishment before they hatch from the egg from the egg white and the yolk, which is absorbed into the chick's stomach just prior to hatching.
its not hatching
Just before hatching begins, the air cell expands to approximately 30% of the internal volume of the egg. As hatching begins, the beak of the embryo penetrates the inner shell membrane where it forms the inner wall of the air cell. The lungs begin to function, inhaling the air from the air cell.
no
The egg itself provides the nurishment the chicken itself is not a mammal!
The yolk is to feed the still developing animal inside, nutrients it needs before hatching
yes, they do. it keeps the egg warm for the time being.
It helps it to get out of the egg when it is hatching. It is not a tooth in the proper sense and in most cases it is lost after hatching.
3 to 5 days after hatching 3 to 5 days after hatching
If it is out in the wild,if the egg is hatching,the egg will be moving and it will have cracks in it.