I would just close in the coop, we built ours enclosed with a long run, I put extra straw on the floor for insulation, but other than that, they seem to do fine.
My husband and I built it, this is our first go at chickens too. Pretty happy with the constant supply of tasty eggs we get. Get so many we have had to share some to keep them from stacking up.
South Texas Egg Lady here! LOL 65 miles South of Houston Tx. My first go round at raising Chickens. They are 6 months old and full of feathery personality.
Ok fellow chicken lovers here it goes:
Already have another producing Lemon and have an Orange, Grapefruit, 5 Figs, a Lowquat, Plum, Peach and 30 Pecan Trees! LOL