My largest RIR rooster is sitting in the nest box on eggs. Twice today I went to check on eggs and he jumped out of the box. It looks so funny to see his big head and comb sticking out of the box. Not so funny that both times the egg in the nest has been cracked. It has been in the low 20's today and was 7 last night. I left the light on for heat, but that seems to throw the laying schedule off all day. Maybe he just thinks it is warmer in there. It is supposed to go to 0 tonight. Don't know if I should leave the white light on. (Don't have a red one) It really doesn't generate that much heat and I have 24 birds. Got 14 eggs today from 20 hens.