WE were a bit concerned about how our chickens would do in the Michigan winter. I have read conflicting reports about how much shelter chickens actually need. Everything from insulated coops with a heater to “open air coops” that are basically shelters from the rain and a wind break. I simply ran out of time so my birds ended with the “open air” style. It is basically closed in on 3 sides and they roust under the shelter.
I went in and dug up the bedding with a digging fork to make it easier for them to dig around. They sure love it when they find some worms. I also dumped a shovel of sand/gravel mix for grit if they need it. I temporally have 17 birds and we are getting 9-10 eggs a day, which is pretty good for Michigan winter with no supplemental light.