There are dramatic and physiologically relevant changes in both skylight color and intensity
during evening twilight as the pathlength of direct sunlight through the atmosphere …

Outside of the laboratory, animals behave in spaces where they can transition between
open areas and coverage as they interact with others. Replicating these conditions in the …

New information is often emphasized as a basis of effective and scientifically sound
environmental policy and management. However, outdated or incorrect information is not …

Most diurnal birds have cone-dominated retinae and tetrachromatic colour vision based on
ultra-violet/violet-sensitive UV/V cones expressing short wavelength-sensitive opsin 1 …

Honeybees, like humans and most other vertebrates, are colour-blind in dim light. Bees are
primarily day-active and have apposition compound eyes, the typical eye design of diurnal …

Light has profound behavioral effects on almost all animals, and nocturnal animals show
sensitivity to extremely low light levels [1–4]. Crepuscular, ie, dawn/dusk-active animals such …

The mysterious world of biofluorescence in terrestrial ecosystems is mesmerizing. Though
not as ubiquitous as in the ocean, it is not a rare phenomenon on land. Fluorescence occurs …

Sensory drive theory posits that the evolution of communication signals is shaped by the
sensory systems of receivers and the habitat conditions under which signals are received. It …

To control flight, insects rely on the pattern of visual motion generated on the retina as they
move through the environment. When light levels fall, vision becomes less reliable and flight …

Many animals become active during twilight, a narrow time window where the properties of
the visual environment are dramatically different from both day and night. Despite the fact …