My chicks hatched last week. They were VERY loud for 2 days and then stopped. And now they are loud again. REALLY loud. It's very irritating. I don't know the problem! they have heat and it's not too hot or too cold. They have food, clean water, everything! Why won't they all be quiet??! All of them keep screaming at the top of their lungs like something's wrong, but I can't find anything wrong.