At what temps do you close up your coop?? We have two windows that have been open (and a fan in one that I run when it's above 85*) since, we got them, mid July! The windows are on each end wall--so there is free movement of air... My coop is 10' (door wall)x7' (window walls), the roost is even with the windows but not directly in front of them.... So, do you close your windows and open them each day, do you wait until it's really cold and leave them shut.. I am in NC--- Thanks.