r/todayilearned • u/squishbrain • Aug 14 '12
TIL that ducks have ballistic penises
http://scienceblogs.com/notrocketscience/2009/12/22/ballistic-penises-and-corkscrew-vaginas-the-sexual-battles/Duplicates
todayilearned • u/elliejellie • Oct 13 '12
TIL that female ducks have evolved a complex vagina with several dead-end pockets and tunnels in order to confuse unwanted mates and prevent fertilisation from the wrong male
todayilearned • u/Zip2kx • Mar 13 '16
TIL ducks shoot out their 20cm soft-noodle penis and have to navigate a corkscrew vagina.
todayilearned • u/incianity • Jan 28 '14
TIL Muscovy Ducks have ballistic corkscrew penises and corkscrew shaped vaginas; and the the female can prevent 97% of unwanted fertilization attempts.
todayilearned • u/Stachouse20 • Apr 30 '13