I have my girl's coop and run in a 25x25 fenced in garden. I let them out daily for a few hours when I am working in the yard and occasionally I have to go get one off the the fence--whcih is about three feet tall. With cold weather approaching, I would still like to let them out, but I don't want to stay and supervise them. If I clip their wings will they still be able to get over the three foot fence?