We have been getting in the low 30's at night and soon it will likely be upper 20's. Our coop is fairly small which we did to help retain heat but i worry that it is still not enough. I dont want to use an electrical heat source and i also want to avoid overheating them. Is this something i even need to be worried about or am i overthinking it? One of my girls has a large comb and waddles and i guess i am a bit worried about damage to them due to the cold.