Chicabee, my chickens only free-range when someone is in the backyard with them. Maybe that isn't quite
free but everyone, including the chickens, seem to appreciate the arrangement.
The fences behind the house are 5' on one side and 6' on the other and back. However, the gate to the driveway is only 3'. That gate is about 10 feet wide.
The chickens could even
crawl under this gate. Neither the pullets I have now nor the birds I have had in the past have ever gone either over or under the gate - or over a fence, for that matter.
I have not had a rooster since I left the farm many years ago. And, I've never had more than 4 hens out at a time even when I've had more. They may be out for hours and hours in good weather but there's car traffic beyond that gate and people walking by every now and then. Mostly, I don't think they want to get very far from their coop and "their" people.
The hens would be shooed back if they spent too much time hanging around the gate or if they drifted over to the far side of the house. They could end up in the front yard (fenced also) if they went completely
around the house. But, I can only remember that happening a couple of times. When when they did go into the front yard a very weird creature that looked something like the Boss but behaved like he wanted to eat them raw (!) showed up out there
!!! They beat a hasty retreat back to the backyard and stayed there
.
Steve