Yes, it is quite cold here in winters. As cold as Minus 30 celcius sometimes. Our coop would be only about 5 Feet High max, I think. I will have to look more into a heat lamp....but we found a styrafoam sheeting for insulation so I feel a little better about keeping it warm in there.
We used to have a muscovie duck back when we lived on a farm in BC. We had geese too, and they were awful, but the Duck was so awesome. He and my Husky who was a puppy at the time were the best of friends. But he became a little trouble maker after we got too friendly with him....he'd try to get in the house, eat the garbage, and mount the geese, LOL I miss him though.....we called him Ducky Duck, LOL Id think about getting ducks again, but our pond is farther from the house than it was there, and I couldnt mess around with the water source through winter, it'd drive me nuts!