Many animals use vision to detect, discriminate, or recognize important objects such as prey,
predators, homes, or mates. These objects may differ in color and brightness—having …

In recent years, the study of polarisation vision in animals has seen numerous
breakthroughs, not just in terms of what is known about the function of this sensory ability …

Birds are renowned for their exceptional vision and the way that this enables them to survive
and navigate the world in such a unique way. However, it is now recognised that avian …

Birds have impressive physiological adaptations for colour vision, including tetrachromacy
and coloured oil droplets, yet it is not clear exactly how well birds can discriminate the …

Flying animals need to accurately detect, identify and track fast-moving objects and these
behavioral requirements are likely to strongly select for abilities to resolve visual detail in …

The cellular structure and functional relevance of the bird fovea are still incompletely
understood. This review gives an overview of the cellular composition of the bird fovea, with …

Diurnal raptors (birds of the orders Accipitriformes and Falconiformes), renowned for their
extraordinarily sharp eyesight, have fascinated humans for centuries. The high visual acuity …

Animals are thought to use achromatic signals to detect small (or distant) objects and
chromatic signals for large (or nearby) objects. While the spatial resolution of the achromatic …

In humans, geometrical illusions are thought to reflect mechanisms that are usually helpful
for seeing the world in a predictable manner. These mechanisms deceive us given the right …

Sensory capacities and perceptual challenges faced by gillnet bycatch taxa result from
fundamental physiological limits on vision and constraints arising within underwater …