Variation of visual signal coloration has been predicted among closely related species or
populations by the sensory drive hypothesis and tested in fishes, reptiles, or birds. However …

A big question in behavioral ecology is what drives diversity of color signals. One possible
explanation is that environmental conditions, such as light environment, may alter visual …

Colors often appear to differ in arbitrary ways among related species. However, a fraction of
color diversity may be explained because some signals are more easily perceived in one …

Animal signal colors evolve to efficiently stimulate conspecific visual systems. The sensory
drive hypothesis proposes that species differences in habitat light conditions favor the …

The sensory drive hypothesis states that selection acts on signals to make them more
detectable in the habitat conditions in which they occur, resulting in signal divergence for …

Ball rolling dung beetles use a wide range of cues to steer themselves along a fixed bearing,
including the spectral gradient of scattered skylight that spans the sky. Here, we define the …

Colorful feathers have long been assumed to be conspicuous to predators, and hence likely
to incur costs due to enhanced predation risk. However, many mammals that prey on birds …

Sexual selection often favors brighter and exaggerated traits, which also increase the risk of
detection by predators. Signals that are preferentially conspicuous to conspecifics would …

Studies on animal colour vision typically focus on the chromatic aspect of colour, which is
related to the spectral distribution, and disregard the achromatic aspect, which is related to …

Most of our current understanding on colour discrimination by animal observers is built on
models. These typically set strict limits on the capacity of an animal to discriminate between …