We are just starting to expand our farm and I couldn't be happier. I am looking for advice on our bunnies as we expand their living quarters and possibly add a few more. We are building a horse barn and plan to add a 16x16 stall for our bunnies. We will have this attached to an outdoor covered pen that measures 30x30. My question is: during the winter months ( We live in upstate NY) will the bunnies be warm enough if access to the outdoor pen in completely blocked off? We will be having 3-5 inches of shavings and straw on top of a rubber stall mat along with hides and different levels to get off the floor. We have 4 bunnies and they all love each other and will cuddle to stay warm I am sure. We just want to give our babies the best ever "non cage" cage they could want. They are not breeders as all are fixed they are just pets and pieces of our family. So we want them as happy and safe as possible.