The Evolution of Beauty: How Darwin's Forgotten Theory of Mate Choice Shapes the Animal World

In this thought-provoking exploration of sexual selection as an evolutionary force, Prum (ornithology, Yale Univ.) argues that Charles Darwin's theory of natural selection isn't the only thing driving evolution. Sexual selection is the idea that the female is responsible for more than modern-day scientists are comfortable admitting, by choosing mates based on attributes that are aesthetically pleasing rather than serving some sort of function to further the species. For example, in order to attract a mate, the male great argus pheasant builds an "arena" by clearing out sticks and leaves, waits for a female to approach, and then expands his feathers, which are covered in multicolored optical illusion spheres, and dances around. Prum argues in favor of Darwin's theory that this mating ritual, along with others, is the culmination of evolution through mate choice, that individuals have the capacity to choose mates with the ornaments they prefer. He expands this theory mostly through his ornithological studies but also casts the methodology onto humans as well, which is much easier to comprehend. Prum's prose is simple and enjoyable enough for the Darwinian-challenged to understand while based in enough scientific evidence to engage those who might disagree with the ideas presented.