Tag: roosters

Bad News for Roosters: If You Aren't King of the Henhouse, Your Ejaculate Will Be Ejected

By Veronique Greenwood | August 26, 2011 12:23 pm

rooster
WHAT? Noooooooo!

If you haven’t heard about the corkscrew kookiness that is duck genitalia by now, you need to check that stuff out ASAP.

Ducks’ twisting vaginas and telescoping penises are well-known part of an evolutionary arms race between the sexes that’s been going on for millennia, with each side trying to exert control over which males’ sperm fertilize the female’s eggs—a battle that, especially in birds, is fierce, occasionally violent, and weird as all-get-out. The most recently discovered example of what biologists deem “sexual conflict,” a little behavior hens have developed called sperm ejection, upholds that fine tradition.

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