Male fiddler crabs wave an outsized claw to show off, and male hummingbirds display their flying prowess with a flamboyant mating dive.

雄性的招潮蟹会挥舞着它那只大钳子来炫耀自己，蜂鸟则是通过和配偶一起俯冲飞翔来展现他的雄姿。