The swan is the only bird that has a penis.
So how do those other bird eggs get fertilized? Never thought about this or knew about swans.
SAINTHOOD AND A THOUGHT
7 hours ago
Thursday, September 6, 2012
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2 comments:
The duck is a bird, and is known for it's corkscrew-shaped penis that can be quite long.
http://www.wired.com/wiredscience/2010/08/duck-penises/
http://www.abc.net.au/science/articles/2001/09/14/366856.htm?topic=enviro
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