What are the recommendations for heating your coop? We live in central NC so the winters aren't too bad. I'm itching to get them out to their coop but didn't know what I should do to heat the coop. And how old/what average temp does it need to be to move them from brooder to coop? They are almost 6 weeks and I've found a few out of the brooder and exploring the room they are in. I have deer netting I can use over the brooder to keep them in but when should I move them out? Thanks!!