Pheasants do not feed their chicks. Immediately after hatching, a pheasant chick starts pecking at seeds and insects on the ground. How might a behavioral ecologist explain the ultimate cause of this behavior?
Pecking is a fixed action pattern (FAP).
Pheasants learned to peck, and their offspring inherited this behavior.
Pecking is the result of imprinting during a critical period.
None of the listed responses is correct.
Pheasants that pecked survived and reproduced best.