About a week and a half or two weeks ago we put a red light in the chicken house to help keep it above freezing at night. Normally NC doesn't get "that cold" during the winter months, but we've been having freakishly cold temps both during the day and at night. I hadn't originally planned to put any sort of heat in the chicken house because I figured that they were mostly old enough to keep themselves warm (all except the Seabrights, I don't have any idea how old they are but one started laying January 2nd). The Seabrights would snuggle in between two of the bigger hens and that seemed to work fine for them. Anyway, we got into this freakishly cold weather pattern and we weren't even getting above freezing during the day. After a few days of finding frozen/cracked eggs in the nest loft I decided we had to put a heat light out there. Besides, it was so cold out that I was getting cold just thinking about my chickens being out there with no heat. Our chicken house isn't insulated. Now I'm starting to wonder how I would know if the light is disturbing their sleep. None of them are acting unusual. (Other than Hawkface, or EE, with her new habit of squatting every time she comes near me...which I actually think is her way of playing the "I'm so adorable and let you pick me up and pet me, so I get first dibs on whatever treats you're bringing out" game. She'll come running and let me pick her up, but once I set her back down she checks out my fingers, decides they might be crickets or worms, and takes a beakful. Of course, this isn't really all that unusual for her. Some girls are just more of treat whores than others I suppose.) Back to the light. Everyone still goes into the house when it gets dark and they all seem quite happy. Plus, no more frozen eggs! Could the light be causing problems that I wouldn't notice though? We do keep it on all night, because it's really stinking cold at night!