Vision Research 39, 3321-3328. Preference for ultraviolet partners in the blue tit. Animal Behaviour 58, 809-815. Adaptations of visual pigments to the aquatic environment. Proc R. Soc.
Dragon fish see using chlorophyll.
Naturwissenchaften 85, 189-192. Spectral absorptance and the retinal distribution of the visual pigments and oil droplets of the starling. Journal of Experimental Biology 201, 1433-1446. Blue tits are ultraviolet tits. Proceedings of the Royal Society, Series B 265, 451-455.