I have one rooster and four hens. Everyone is six months old. My mom works on a college campus, so we have a normal neighbor on one side of our house and a dorm on the other. The backyard is fenced in (where the coop is), but if the chickens got in the front, they could get to other people's yards and the road, not to mention the college campus. Our chickens weren't full grown when we last let them out to free range. They only just started to get big and wander into the neighbor's yard when winter came and we couldn't let them go out any more. Will a rooster keep them together when the are in the yard? If I get rid of our rooster, will they not stay together? Will they definetly go into the neighbor's yard, and maybe the college campus? Is there any way to teach them to stay in our yard, or am I overestimating the powers of their tiny chicken brains? Will they get to a point when they will go into the coop on their own once it gets dark? We had trouble with that before: it would always take about half an hour, and a lot of effort.