We have two adult ewes and one three month old ewe coming to us on the weekend and we're building the sheep house from scratch. Any suggestions/advice on what works and what doesn't? Cleaning, ventilation, flooring etc. We want them to lamb outside in the spring and they will be kept outdoors all the time. We will eventually have a flock of no more than 10. We're in Ontario, so the summers are HOT and the winters are SNOWY and COLD! Well...usually, last winter being the exception of course.