I am ready to let my chickens free-range. I think they are feeling anxious in the run all day. How far way to they wander? We are on 5 acres, but only the main part of the backyard is fenced. They can most likely get through the bars of the fence...and my neighbor's dog has been "admiring" my chickens through the fence. So, that makes me feel a little uneasy. Also, we have a pool...will the chickens jump in the pool and drown?