This thesis demonstrates a novel approach to assessing the colour rendition of objects by
high efficacy light sources. It establishes a relationship between a light source's output and …

Across taxa, sexual communication is fundamental to an organism's reproductive fitness,
and ultimately, its evolutionary success. Consequently, strong selection pressures often lead …

No single hypothesis is likely to explain the diversity in eggshell coloration and patterning
across birds, suggesting that eggshell appearance is most likely to have evolved to fulfill …

Avian eggshell colouration fulfills multiple adaptive functions, including egg camouflage.
The potential role of the two main eggshell pigments in oxidative stress, biliverdin and …

This thesis examines visual anti-predator strategies employed by the Lepidoptera. I examine
key aspects of pattern and behaviour and how they relate to the reduction of an individual's …

The visual pathway has been successfully modelled as containing separate channels
consisting of one achromatically opponent mechanism and two chromatically opponent …

For animals with advanced nervous systems, survival and reproduction can depend upon
accurate perception of the environment. To understand how a perceptual system should …

The human color and luminance-driven systems appear to be mediated by mechanisms with
distinct spatio-temporal tuning properties, with the iso-luminant color-driven system …