A new study from McMaster University challenged Charles Darwin's long-standing theory of female choice. Rather than females being drawn to males that have the most vibrant tail feathers or best dance moves, researchers suggest that, once aroused, courtship displays have no bearing on a female's mate preference.
Males of a newly discovered species of jumping spiders have been filmed playing peek-a-boo with potential mates. Not all females are receptive to this playful courtship -- females who have mated before will chase off suitors while virgin females hook-up almost immediately.
Male peacock spiders use of exotic dances, vibrations, and colors in courtship displays, but it takes extra dedication to win over females who don't impress easily.