I have a new chicken coop with 3 month old chickens which are flying now. My concern is they are flying over the 7 foot fence and I have dogs waiting on the other side, which I don't trust unless I'm standing right next to them. So far a few have gotten out without incident but I'm worried. Should I clip their wings so they can't fly over the fence while at the same time, taking away their main means of escape. What to do, what to do???