I don't post often but read a lot on these forums. This week we had some very cold weather for our area, usually in 40's and 50's but it went down to single digits. All we did with our coop was to insulate the inside with cardboard and change the roosts so they were flat where the chickens feet went. Our girls didn't even seem to notice the cold. They even started laying again after their molt. We have 5 standard size hens in a big wooden doghouse and that may have helped too, there were plenty of warm bodies in that small space. I work very early morinings (5 a.m.) and I checked on them a couple of times before work and they weren't even huddled together at night. During the first day of snow they stayed under tree cover on grass but eventually wandered into the snow to dig and scratch. I just want to thank all the experienced cold weather chicken owners for helping us feel better about the girls out in their first cold weather snap, Dawn.