Entries by Guest Author

True Colors: How Birds See the World

Guest Author: Cynthia Berger  IN THE EARLY 1970s, A RESEARCHER testing the ability of pigeons to discriminate colors discovered by accident that the birds can see ultraviolet (UV) light. The finding was deemed curious but not too important. “It was natural for scientists to assume that bird vision is like human vision,” says Geoffrey Hill, an Auburn University ornithologist and […]