Do you think I'm sexy? Why peacock tails are attractive

Scientists in the US have used eye-tracking cameras to work out exactly what peahens find alluring in a peacock's tail fan. The male birds grow their trains of iridescent feathers during the mating, or lekking, season, fanning them out and rattling them to attract a mate. via Pocket http://www.bbc.co.uk/news/science-environment-23423074#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa