Hello! We are newbies just starting construction on our coop with no birds on site yet. We have planned a simple 8x8 design with half of the space designated as indoor space for the chickens and the other half for storage/nesting boxes. Our biggest question so far, and I'm sure there will be many! Is the balance of ventilation vs heat conservation. We are located in northwestern Ontario where it is not uncommon to have daytime temperatures in the -30 degrees Celsius range in the winter with even lower temperatures at night. From what I've read it is the humidity that can kill our birds not necessarily the cold, but won't they freeze with open vents near the roof open all winter? We are insulating the coop and are not opposed to heat sources if necessary. Also, with insulating should we be doing vapour barrier as well? Or will this just add to the condensation problem? We are planning on starting small with 4-6 egg layers as a hobby / learning experience for our kids (and us as well!) Thank you!