We have ten 7 week old hens that have just moved outdoors and are in need of a coop. The problem is, my husband won't have time to build the perfect coop he has in mind until next spring. Right now the chicks are in a 8x12x6 foot run covered with plywood. We put their 4x6x2 foot chicken tractor inside. We're trying to decide how to keep them warm this winter (20's-30's with 1-2 feet of snow). One thought I had was to pile bales of hay around the tractor and cover the whole thing with a tarp. Stupid idea or doable? Any other ideas for a temporary coop?