Hi, I live in South Dakota, first year raising chickens. Have 4 barred rock. About 2 weeks ago we had 8 inches of snow, chickens feet were getting red between their toes so moved the coop into my garage. The garage is insulated but no heat. So far it has stayed about 30-35 degrees in there. Will change as our winter progresses. I noticed the other day, their feet were red again. It had went away after putting them in the garage. We have two layers of cardboard between the coop and the garage floor. What do you do to keep them warm without lights? (we had a garage fire in April so not taking any chances on starting a fire). I think their feet get cold just during the day, would sand or straw help keep their feet warmer. I doubt they are cold. Combs look great. We are getting another 10 inches of snow today, so wondering what others in cold climates do? Thanks for the help and suggestions. I have had great help thru Backyard Chickens, so thank you very much.