North American scientists have discovered the longest bird penis ever – a 42.5cm organ belonging to a duck.

Dr Kevin McCracken of the University of Alaska, Fairbanks, and colleagues, report in this week’s Nature that they have found a specimen of the Argentine lake duck (Oxyura vittata) that has a penis as long as its body – nearly half a metre long.

How the hell does it walk without tripping over that thing?

Check out the original article here.