I wear two hats, behavioural ecologist and sensory ecologist, although the unifying theme is the explanation of the factors shaping the design, through natural selection, of animal form and function. If I have particular skills then they are, first, developing novel empirical tests of theoretical predictions, whether in the lab or field, and second, establishing successful interdisciplinary collaborations. Most of my work lies at the interface of different disciplines, and I have a long history of working with mathematicians to investigate behavioural decisions. More recently, and my current main research area, I have been collaborating closely with physiologists, perceptual psychologists and computational neuroscientists to understand how animal coloration (notably camouflage) evolves in response to animal colour vision.