In 1860, Charles Darwin wrote that "The sight of a feather in a peacock's tail makes me sick." How could such a cumbersome, seemingly pointless trait evolve? His eventual answer: The tail isn't a survival tool; it's a mating ornament, shaped by the peahen's mate preferences. pic.twitter.com/8zNLC06KfD
— Steve Stewart-Williams (@SteveStuWill) September 13, 2021
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