I am getting geese in 2 months, and was thinking of what I was going to do for winter housing. I will only have 2 geese that I will be wintering this next winter, though I want to build for up to 6 geese in case I increase the next year. I live in Ontario, Canada too, and so I also worry about winter housing as it can get really cold and very windy here. My plans so far are to build a shed about 8 by 12, having a small area where you first walk in to store extra feed. The inside roof rafters will be open ever 3rd or 4th beam, to allow for ventilation. The rest of the roof will be insulated along with all the walls. I plan on building it a foot or 2 off the ground and resting it on concrete blocks, during the winter packing underneath with hay/straw to insulate. The floor I plan covering with that white hard plastic sheets that butcher shops use, along with the walls. They are very washable and hard and durable. You can get them for about 20$ an 8 by 4 sheet but I feel it is worth it. Double doors also so I can drive the tractor up to the door and just push the dirty shavings in. I plan on having power running to the shed so there can be a heat lamp over the water during the winter, along with warming lights. I am still looking for more ideas, I want to build once and try to make as few mistakes as possible.