No penis required. Google “cloacal kiss.” Photo by PWIO via Creative Commons [Photo linked to original] No penis required (Google "cloacal kiss" if you're curious.) Photo by PWIO via Creative Commons

Bird Sex and Why It Matters: My New Column For the New York Times

ByCarl Zimmer
June 6, 2013

Check it out!

(And for you anatomy junkies, Ed Yong has more!)

National Geographic History Magazine

The gift that brings the past to life - now with a free tote
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