Humans' visual world revealed by birds' visual world

Abstract

Visual illusions in animals are important to study because they magnify how the perceptual system in each animal works. This paper reviews comparative studies on visual illusions in birds (pigeons and bantam chickens) and humans. Not only similarities but also dissimilarities in the perception of illusory figures between these animals have been shown, suggesting that the same physical environments may induce different visual worlds among the species.