Limits to the salience of ultraviolet: Lessons from colour vision in bees and birds

Ultraviolet is an important component of the photic environment. It is used by a wide variety of animals and plants in mutualistic communication, especially in insect and flower inter-relationships. Ultraviolet reflections and sensitivity are also becoming well considered in the relationships between vertebrates and their environment. The relative importance of ultraviolet vis à vis other […]

The psychology of control: Effects of control over supplementary light on welfare of marmosets

It is often argued that increasing the amount of control that animals have over various aspects of their environment has a positive effect on their welfare, despite limited empirical evidence. We gave 12 pairs of common marmosets (Master pairs) control over supplementary light in their cages (additional to the regular room illumination). The light also […]