BOSTON — A taste for reddish young leaves might have pushed howler monkeys toward full-spectrum color vision. The ability to tell red from green could have helped howlers pick out the more nutritious, ...

Snakes perceive the world differently from humans, possessing dichromatic vision with two primary colors due to unique visual pigments. Their eye structures and UV sensitivity are finely tuned to ...

At head of title: ...Privy council. Medical research council. Reports of the Committee upon the physiology of vision. xiv. "References": p. 50-51. "Appendix II. Some ...

Scientists recently discovered the aptly named peacock jumping spiders have the color vision needed to appreciate the male's gaudy display. Now biologists are studying whether that ability translates ...