The matching law applies to wagtails' foraging in the wild.

Researchers watched wild wagtails in their natural habitat.

They timed how long each bird spent defending territory versus catching food.

They compared these real-world choices to the matching law predictions.

The birds followed the matching law perfectly.

When food was twice as rewarding in one spot, they spent twice as much time there.

Even with territory defense competing for time, the math still worked.

Innis (1978) first showed pigeons in labs matched their pecking to reward rates.

Bradshaw et al. (1978) found response bias matters - birds peck more than they press levers.

The wagtail study extends these lab findings to wild animals making real survival choices.

Rose et al. (2000) later challenged matching theory by showing k values change with reward size.

This creates an apparent contradiction, but the wagtail study used natural rewards where k stays stable.

You can trust the matching law outside sterile lab settings.

When clients split time between tasks, check the relative payoff rates first.

Adjust reinforcement rates rather than fighting the natural matching tendency.