Maybe a dumb question, but I know that many dogs love to chase/kill chickens. When my dog was a puppy she killed 2 at the ranch I worked at. I have heard people say a dog/other predator killed over a dozen chickens in a few minutes. So my question is... Can't they get away? I know they can jump/fly pretty high when they want to. Are they not quick enough? Not smart enough to fly onto a high roost? My current fence is 4 feet high. I know they could get out if they wanted to, which isn't really a big deal, I'd like to let them free range if I can. But if they jumped out, and a dog came along, would they all be killed or would they jump back in? If I let them free range and there was a predator would they fly into a tree and be safe? I also hear about them being killed in their coop, but if I put roosts up high will they be safe if something were to get in?