I have a mama who is sitting on eggs in big coop. I have successfully let one mama hen hatch out babies within the last couple years. This is a younger hen, and she has hatched out a few and they did not make it. My question is, I have some that have Pipped.. and I see movement. Do I just kept a closer eye on them, or can I move them inside under a lamp? No incubator. I just want to do what is the best for survival.