There was a bulletin on myspace. it said: that the oxyura vattita has a penis as long as its body.
The subject was "Did you know?"
What is an oxyura vattita?
It's the Argentina Lake Duck (should be oxyura vittata); the penis is thought to have evolved as a way to remove sperm from males who mated previously with the same female (owwww...!)
What is an oxyura vattita?
It's an Argentine Lake Duck
What is an oxyura vattita?
The Argentine Blue-bill or Argentine Lake Duck (Oxyura vittata) is a small South American stiff-tailed duck.
It is notable for possessing, in relation to body length, the longest penis of all vertebrates; the penis, which is coiled up in flaccid state, can reach about the same length as the animal itself when fully erect, but more commonly is about half the bird's length.[2][3] It is theorized that the remarkable size of the spiny penis with its bristled tip may have evolved in response to competitive pressure in these highly promiscuous birds, removing sperm from previous matings in the manner of a bottle brush.
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