Evolution story of the day….
Female Ducks Evolving to Avoid Endowed Males

Yale researchers have found that some female duck genitalia is evolving, forming clockwise spirals, to avoid impregnation from undesirable yet aggressive males.

The study builds upon a finding by Yale in 2007 that first noted how duck’s sexual organs had been morphing. While most birds are phallus-free, ducks are oddly endowed—up to 8 inches. Using high-speed video they found that ducks could go from zero to happy in less than half a second.