Hi everybody - this is my first real question here, so thanks in advance for any info anybody has for me! I appreciate the notion that chickens can live in very cold places without heat, etc - in theory anyway. But when it got cold here for several nights in a row (15 degrees at night), one of our chickens (a barred rock) got some black spots in her comb which I assume was frostbite. Is this unusual? I saw a suggestion here not to use lamps, etc., but to watch the birds and see how they're behaving and watch for signs of frostbite and that seemed like a reasonable approach. And it was that approach that led me to notice it. We had thought about using a lamp or something but I realized that it was too much of a fire hazard. The coop is very small and it seemed crazy to put a heat source so close to so much flammable material. A little info on our setup: we have three chickens in a small hen house, which has a small door which we've kept open (even when it's very cold) because we've read about the importance of ventilation. It is not insulated. So first, is it unusual to get frostbite at 15 degrees? Is it just a fluke? And any suggestions to keep them a little warmer at night? Definitely not a lamp but something? Would it make sense to close the door if I scoop out the poop every day so the moisture wouldn't build up? It's not cold here often but when it is I'd hate to have them suffer unnecessarily. We're new to this so we're kind of making it up as we go along! Thanks!