I am getting more hay for their coop, but I don't think heat is the problem. Recently they have been opting to sleep on the cement under the awning of our garage or on the cement on our back porch. Yesterday morning I found one roosting on my sons sandbox. When this first started happening I checked to see if anything was in the coop or if there had been something wrong with it. Since nothing was wrong I figured something had scared them out, but had gone away. We have a fence around the coop to ward off dogs, but the chickens can get out of it. So even when I throw them in there so they are close to the coop they don't use it. When I put them in the coop they run out and look at me like I am crazy. I cannot figure it out. Oh and I have a dog box outside for stray cats, so there is hay in there. The chickens have used that before as a sleeping spot, but have been refusing to use that now too. I don't know whats going on, but since it is December and snowy out I want them warm. Anyone with any clues?