Prefer Newsweek on Google to see more of our trusted coverage when you search. Depending on what corners of the internet you frequent, you may have heard about the horrific corkscrew penises ducks use ...
Most birds lack genitalia, but male ducks are known for their long, spiraling penises, which have evolved through an ongoing cat-and-mouse game with females. A new study from The Auk: Ornithological ...
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