I live in SC. Although it is pretty warm during the day now we are having a couple of nights with temps in the 29-42 degrees. Not consistently but still. They are outside in a locked coop but I am concerned about warmth. I do not have electricity in the coop and I would like ideas how to keep them warm. They are ameracaunas and are fully feathered. I have older chickens and know about baby chicks but a little confused on juveniles.