What they have found is that when moving with a purpose such as foraging for food, many creatures follow a particular and shared pattern. They walk (or wing or lope) for a short time in one direction, scouring the ground for edibles, then turn and start moving in another direction for a short while, before turning and strolling or flying in another direction yet again. This is a useful strategy for finding tubers and such, but if maintained indefinitely brings creatures back to the same starting point over and over; they essentially move in circles.
So most foragers and predators occasionally throw in a longer-distance walk (or flight), which researchers refer to as a “long step,” bringing them into new territory, where they then return to short walks and frequent turns as they explore the new place.
Culture Magazine
It seems that both humans and animals forage like this:
