Foraging theory's a branch of behavioral ecology that studies the foraging behavior of animals in response to the environment in which the animal lives. Foraging theory considers the foraging behavior of animals in reference to the payoff that an animal obtains from different foraging options. Foraging theory predicts that the foraging options that deliver the highest payoff should be favored by foraging animals because it'll have the highest fitness payoff. Robert MacArthur, J M Emlen, and Eric… (More on Foraging)