The videos revealed that males vary a lot in their sensitivity to how a female responds to their display. Some males are attentive. If a female seems alarmed, they will rein in their display, tempering their wing flipping and giving her some distance. Other males are oblivious. The responsive dudes, it turned out, are those that secure the most matings. Males who go overboard in demonstrating their intensity and power lose out. In other words, says Patricelli, sexual selection seems to favor both the evolution of elaborate display traits and also the ability to use them appropriately. And this
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