With the cold temps approaching, I have been getting the girls ready. The heat lamp thing makes me nervous....especially leaving it on at night. They hate the red lamp and seem to fight more with it on. Should the door opening to the run be closed or left open? What about making the opening smaller? Would hanging something - fabric wise - and making vertical slits in it help? I also covered their perches with the pipe insulation and they love it...nice and cushy on their toes! I taped it by thirds to stay in place. ANy thought son the door and red heat lamp would be great.