I know not chickens but some things should stay the same right? I'm worried about the extremes of temperate where I live up north. I was reading about this where you make artificial dirt borrows: http://ressources.ciheam.org/om/pdf/c08/95605275.pdf I want to simplify it by having basically a large run with 1/3 being the dirt filled shelter part for the rabbits. What is the best way to keep the temp comfortable? Should I stick to a more traditional well ventilated shelter instead? I'm not sure how to insulate or ventilate something properly. I not going to try and do the fan, misting etc type set up to keep them from overheating.