I'm guessing. They ranged much farther when they lived at my neighbour's house, which was devoid of the edges found here. She had much the same feeding schedule as me, perhaps even more liberal.
Birds are out from 8 AM to dusk, whenever that is. I fill their feeder with layer pellets in the morning, let them get hungry until they get annoying, which is usually about three, then I feed them just enough to keep them from poking around the dog run too much. Their main foraging ground is...
My free range birds stay in the immediate area, maybe a 200' radius from the coop? They get uneasy if very far away. Most days they stay within 100'. I think, anyway... I'm bad at distance estimates.
I suspect if they had more cover and fewer dogs between them and the rest of the property...