This is my first time raising turkeys; I have a male and female broad-breasted bronze. They're about 4 months right now and seem to be doing well. They have a good-sized fenced area outside to roam around in and appear happy and healthy. Their current "coop" though, is just a chicken ark and only has wire on the front and has a tin A-frame roof with no insulation. I'm wondering if they will be okay in the winter with just that as their shelter. I am planning on butchering them around Christmas but it will be well into winter by that time. I live in Usk, British Columbia so it gets pretty cold and snowy. Any suggestions? I want them to be comfortable during the colder months.