Hello, I am looking for designs, plans, or ideas for small coops (2-4 birds, perhaps?) that can withstand very low temperatures. Being in Canada, particularly Saskatchewan, our winters can be lower than -30F. We sometimes have -40 days, or lower. I know insulation is absolutely crucial, and perhaps even extra heating from a heat lamp, but I want to design the coop to be as warm as possible on its own. Of course our summers can be hot, too, in the 90s sometimes, so it is a very troubling thing. We experience both extremes. I saw this design, and was interested, but it seems quite small and not insulated: http://www.instructables.com/id/Backyard-Chicken-Coop/ Does anyone have any plans for a coop that meets these specifications, or any ideas? The more the merrier, I'm an extreme novice as far as woodworking or anything of the like goes. Thanks.