Animals do all sorts of things to attract each other as potential mates. Many birds, for example, produce feathers with elaborate color patterns – from the iridescent plumage of many hummingbirds to the famously brilliant tail of a peacock. Charles Darwin, an early pioneer in the theory of evolution, saw these colors and concluded that they exist because other birds find them attractive.
But this raised a peculiar question: Why did Darwin himself find these colors beautiful too?
