I have 7 chicks that have almost all feathers that have been living in a lean-to room, open on one end. They are in an extra large dog kennel with a brood lamp, covered with a heavy old curtain. It hasn't been below freezing at night but will be around 16 degrees for the next couple of nights. I brought them inside because they looked cold tonight when it was 28 degrees and my partner (who has never raised chicks) told me I was being too cautious and they would have been fine. I have raised chicks for 5 yrs, but never had young'uns in this kind of weather...got any guidance out there???