This is my first "real" hatch. Had a hen hatch out one chick back in July, but now that it's cold here in Va, what do I do with the hen and chicks after they hatch? She is in a 2 x 4 x 2 converted rabbit hutch. She has her own pen. After(fingers crossed here) the chicks hatch, do I need to put a heat lamp in the hutch for additional heat, or will she keep them warm for me? I can move everybody to a completetly enclosed brood box I'm building if needed. I know hens have been hatching chicks in the elements for years, but have a concern about the cold. Any opinions?