Quote:
That light on 24/7 is pretty fundamental. I would absolutely start there. Light programs the hens.
Boy, asking about fixing the draft is opening a can of worms (I have learned from experience....). I love air flow through the coops, air movement that brings the ammonia out of the air that the birds breath. However, too much draft also stirs up dust and whatnot and can lead to other respiratory issues. Here's what I like to have going on in my winter coop - plenty of air vents, up high. My coop is a converted mobile home, so most of the windows are lower than I want them - open they cause a draft to move right over the chickens, which is hard on them and of course the combs can freeze as a result. So I have learned, through much fiddling and rearranging, how to set up straw bales throughout the rooms to create sheltered areas where the birds can roost together and create warmth, protected from the drafts coming in the windows, but the coop is FAR from sealed up tight, and I don't heat the coops. We rarely get below -20 degrees though, so if you do there in Tennessee, then you might want to talk to locals and see how they have handled the bitter cold. Now, not every longtime poultry raiser out there agrees with this idea of winter housing, so it's a good idea to talk to others and see what makes sense to you. Also, I should add that we do get horrid wind storms through here somewhat frequently, and i do close up the windows during those.
Good luck!