Hello all, I've been letting my birds free-range around our yard a lot lately, however, these girls (Columbia Rock-Rhode Island Red crosses) like to jump on tall structures, and I'm constantly afraid that they're going to fly over the 4 ft tall fence and into the neighbour's pug's paws. Because of this, they can only be let out during times I can supervise them and corral them back to safety. There's also one girl in particular who keeps wanting to wander off into the driveway and down the road - all the other chickens are content to stay in the backyard but she's got an adventurous streak. Any advice on what breed to get next year in order to avoid these problems? Perhaps Cornish crosses? Thanks!