This is my first year with birds in a long time. I have 6 turkeys, 3 peafowl and 5 chickens in an 8x12x7 coop. My chickens are single combed EEs and very cold hardy; gotten locally. My turkeys and peafowl are also gotten locally and all are doing fine. This morning it was about -2F when I went out to open up the coop. The door is well protected from the wind so I leave it open all day for right now. I threw out some scratch in the run in the snow and everyone was out pecking around in a minute after opening the door. It was actually pretty nice in the coop when I filled the feeder, could hardly see my breath in there. The turkey's keep the snow in the run packed down so the chickens will come out on the packed snow. I gave them a bale of straw to play with and they have that scattered all over the run in the snow. Everyone looks great. They are really feathered out right now and very healthy; no frost bit combs or feet. They do get all the food that they want right now, have deep litter but no heat. They do have a heater for the water, but that is it. I'm sure there will be days this winter when I will keep them cooped up, like when the high will be -10F. I've seen days here where the high was -25F, but that is pretty rare. Coldest I've seen is -56F on February 2, 1996. That was WAY cold. I camped out in a Quincy (snow cave) I built in the backyard just because I wanted to experience it. It was nice and toasty in there with the snow for insulation. I was a wilderness guide at one point and have camped out at -24 on the ice on a lake with no tent in the Boundary Waters Canoe Area here in Northern MN with nothing more than a couple closed cell foam pads under me and a very good sleeping bag. It was a down bag and the way I see it is my birds walk around wearing a down sleeping bag all day...
They will be just fine with no heat. I'm just doing what all the locals have been telling me and the good folks on here have backed up.