i had 4 chicks hatch out on day 20 and 5 more hatch day 21. its now day 22 and theres 4 eggs left. Im pretty sure 3 of them stopped developing because i cannot see any movement, but the other i can definately see the chick moving and opening its mouth. But the weird part is that there is a huge air sac, or what apperars to be an air sac (its just open space in the egg) the chicks head seems to be in this open space, and the rest of the body at the bottom of the egg. The open space seems to occupy about 40-50% of the egg. At this point shouldnt the chick take up most of this space. Should i help the chick out, or just leave it alone.