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Sexual Arms Race
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πŸ“½ by Raquel Halladay via @youtube

Ducks are not nice, in fact they are pretty awful when it comes to mating.

Because most duck species skew male, male ducks throw natural selection out the window and use their corkscrew penis like a weapon, forcing themselves – often in groups – onto female ducks.

To combat this, female ducks have evolved a reproductive strategy of their own: their vagina is like a cave with many tunnels but only one true path to fertilization – and they can choose which path the male can access.

Basically, male ducks are such prolific gang rapists that the female ducks have a vagina like a corkscrew maze, full of dead ends and false passages to combat the constant forceful copulation.

Check out our story for an article that explains this much better than I can.