I also forbid free ranging...we had an incident with dogs years ago and I now keep my chickens in the "Fort Knox" of coops...overhead protection as well. We just can't be too careful with our harsh environment in the desert. Chickens can be surprisingly hardy and I love that about them, but I am a paranoid chicken mama and I'd rather err on the side of safety.The owners of the chickens called Animal Control. Animal Control brought out a huge trap cage, and tried to trap the dogs for 2 nights using cat food as bait. The dogs were too smart to get caught, and are still running loose. If it were my chickens that it had happened to, I would have shot the dogs that had my chicken's in it's mouth! I don't let my chicken's free range though, and nothing can get in to how I have them set up.