I need some advise on what to do with my chickens and how to fix up their coop this winter. I just got my first chickens this past spring and I have a few questions about the cold weather. I live in Memphis so it doesnt get extremely cold but last year it did get down in the teens a few times. How do I keep the chickens warm in the coop? And do I still let them free range or do I keep them cooped all winter? Should I use a heat lamp? If so, how do I do it without preventing them from getting their sleep at night? I have heard if their is a light on, they wont sleep. I need as much advice as I can get!