I live in northern michigan. I started seeing the affects of the cold 30- temps my chickens were having. So I added a red heat lamp for them to be under incase they needed to warm up. It seemed to make them more happy and more active but it kept them awake 24/7. One of my chickens is very vocal and I could hear her at all hours of the night. So I turned the lamp off. Things are back to normal but I have small bantam hens also and I just want to keep their coop just above freezing. Was thinking of getting either a heat emmiter bulb used for reptiles or using a flat pannel heater I can mount on the coop wall. Any suggestions?