And that's the yardstick by which I measure a "good" forager as opposed to a regular chicken that will scratch about while outside on range but aren't dedicated hunters. Any and every chicken will scratch at the ground and poke around here and there for food, but an excellent forager looks to the range for their most important food source and they are successful hunters. You can watch a flock for awhile and see just which birds those are.
Nearly every step they make nets them a morsel of food, the head is down and the tail is up for the better part of the day. They will range far and wide, not just around the coop and other buildings, and they learn where the best forage can be found and walk that circuit pretty much on a schedule....certain times of the day will find them at certain places for when the sugar rises in the clover or fescue, certain seasons will find them gleaning seasonal food at different areas of the range, they are on hand for different hatches of bugs and when certain grubs come out of the ground. They also seem to know not to overwork any one area of range day after day. These are dedicated foragers that have learned their range, they work their range and they don't have to burn up all their calories in excess running to and fro...they know where to go and when to get there to get the biggest return for their efforts.
Then they teach the range to their young.