I had chickens several years ago and let them free-range. I wasn't worried about them coming around my home at that time but this time is a different story. My wife has a bunch of flower beds and we don't want the chickens in them. I built a chicken tractor last summer and have enjoyed the chickens very much and am thinking about building a permanent coop for 50 birds. I have almost 9 acres and would like to build the new permanent coop with a fenced area for free-ranging. I'm partial to Rhode Island Reds and they're what I'm planning on having. I'm wondering if a 6 foot fence will contain them?