... , which are trichromatic. We assume that photoreceptors light-adapt to the background, thereby implementing the von Kries transformation, which can largely account for observed colour constancy in humans and other animals, including fish. This transformation does not, however, compensate for light...

... Resources Institute, University of Greenwich, Chatham Maritime ME4 4TB, UK 17 9 2011 27 2 2012 © 2012. 2012 bumblebee colour constancy colour vision insect foraging novelty aversion The light environment in terrestrial habitats is not consistent across space or time...

... in direct sunlight. However, in the colour space of an insect ( Fig. 4D ), both colours can easily be separated under both illuminations, even without any assumption of colour constancy. The colour triangle shown here is a two-dimensional projection of the three-dimensional colour space of an insect...

...Anna Balkenius; Almut Kelber SUMMARY Diurnal and nocturnal hawkmoths have been shown to use colour vision for flower discrimination. Here, we present evidence that the nocturnal hawkmoth Deilephila elpenor and the diurnal hawkmoth Macroglossum stellatarum also have colour constancy. Colour...

... unique is in the colour constancy of bees. Theoretical models predict that bees will perform poorly at identifying pure ultraviolet signals under conditions of changing illumination, which may explain the near absence of pure ultraviolet-reflecting flowers in nature. We conclude that there is little...