My broody hen hatched 4 live Keets and 1 stillborn that we removed. Because of some behavior issues, we had to move other eggs over to her, which she is happily sitting on. My concern is the first chicks hatched 2 days ago and are already gaining some size. What happens to any that come out in the next few days when they will be smaller? These eggs all came fertilized from the same company, were sent one day after being laid, and I’ve maintained the same environment for all of them. I don’t understand how there can be a multi-day gap between hatching.