This work is directed towards the understanding of the role of vision and bioluminescence in the deep-sea. Colour vision in birds , particularly the function of ultraviolet sensitivity. A case study in visual optimization. Proc R. Soc. Visual pigments and spectral sensitivity of the starling.
Dragon fish see using chlorophyll.
Ultra-violet cues affect the foraging behaviour of blue tits. Proc R. Soc. Lond B . Plumage reflectance and the objective assessment of avian sexual dichromatism. Adaptations of visual pigments to the aquatic environment.