Sexual selection is invoked to explain all sorts of things that seem counter-intuitive at face value. The best know example is peacock feathers, which make male

Sexual selection is invoked to explain all sorts of things that seem counter-intuitive at face value. The best know example is peacock feathers, which make males more susceptible to predators and are energetically costly. Thus, a male who has an elaborate display must be healthier and more vigorous than one that does not.