Hi! This is my first winter with my flock of 7 chickens and I’m not sure how to utilize my coop properly. It is taller than it is wide (they only sleep in it), and it has great ventilation for summer with a big drop down opening on the people door and a wide, short opening on the opposite side. The eaves of the roof also have openings. A couple of the chickens do choose to roost right in front of the 2 main openings. Do I close them for winter and rely only on the eaves? Is that enough? Or should I leave one big one open and the other closed? I have Orpingtons, brahmas, EEs, and a barred rock and live in TN, so we get pretty cold in the winter but rarely below 10F at night.