My chicks are 17 weeks old now and we are slowly starting to let them free range a bit here and there. The plan is to train our English Shepherd to hang out with them and drive away any predators. We are on a creek and deer fenced on all sides, but the fence down on the creek end isnt terribly high - maybe five feet. All our chickens are heavier breeds, with the RIRs and Welsummers being the lightest and I don't ever see them flying higher than three feet. Shoukd I still clip their wings to make sure they won't go adventuring in the creek or would they be safer with their wings intact? Thanks!