Hello, completely new to chickens at all. Our 6 babies are 7 weeks old now and I was wondering about free range. We do have dogs in the neighborhood and I don't want them leaving the yard, but how do you prevent that?? Also, how do you ever catch them again if they don't come inside for the night?? I would live them to be able to run around and be happy healthy chickens, just very protective and we have a yard that would be very difficult to chase them down in.