Ultraviolet (UV) light-transmitted signals play a major role in avian foraging and
communication, subserving functional roles in feeding, mate choice, egg recognition, and …

By laying their eggs in the nests of other birds, avian brood parasites impose the cost of
rearing young upon their hosts. The recognition and rejection of foreign eggs are primary …

Many evolutionary forces can shape the evolution of communicative signals, and the long-
term impact of each force may depend on relative timing and magnitude. We use a …

Variations in ambient light conditions across different microhabitats can modify the
detectability of predators and prey. Prey have been shown to be more visible in sunlit than in …

Egg discrimination by hosts is an antiparasitic defence to reject foreign eggs from the nest.
Even when mimetic, the presence of brood parasitic egg (s) typically alters the overall …

Predicting future species extinctions from patterns of past extinctions or current threat status
relies on the assumption that the taxonomic and biological selectivity of extinction is …

Hosts of avian brood parasites can avoid the reproductive costs of raising genetically
unrelated offspring by rejecting parasitic eggs. The perceptual cues and controls mediating …

Sex differences in plumage color are common in bird species. Some bird species are
regarded as sexually monochromatic in human visual systems, and in recent years, some …

Avian brood parasites lay their eggs in the nests of other birds, and impose the costs
associated with rearing parasitic young onto these hosts. Many hosts of brood parasites …

Birds have sophisticated colour vision mediated by four cone types that cover a wide visual
spectrum including ultraviolet (UV) wavelengths. Many birds have modest UV sensitivity …