Posted on 05/02/2007 11:18:18 PM PDT by BGHater
Some female ducks and geese have evolved complex genitalia to thwart unwelcome mating attempts, according to a new study.
Males of some species, such as mallard, have a notorious habit of "raping" females. They and other wildfowl are among the 3% of bird species whose males have phalluses big enough to insert into the vaginas of females, whether or not the female consents.
Now, in the most detailed analysis yet of duck and goose vaginas, researchers have established that females of these species have evolved vaginal features to thwart unwelcome males.
Tim Birkhead at the University of Sheffield in the UK and colleagues examined vaginas and the corresponding phalluses from 16 wildfowl species. They discovered that the longer and more elaborate the male member, the longer and more elaborate its female recipient was. No-entry signs
Some vaginas had spiral channels that would impede sex by twisting in the opposite direction to that of the male phallus. Others had as many as eight cul-de-sac pouches en route, that could prevent fertilisation by capturing unwelcome sperm. Moreover, these features were only found in species renowned for forced sex. All other species had simple male and female genitalia.
“These structures are wonderfully devious, sending sperm down the wrong road or impeding penetration,” says Birkhead.
(Excerpt) Read more at newscientist.com ...
“It shows that females are not passive in averting exploitation by males with large phalluses,” says Birkhead.
Something we clearly need in this day and time.
BTW, I really don't think we need pics...
>> “Now, in the most detailed analysis yet of duck and goose vaginas” <<
Who on earth sits around and thinks up these studies?
Uh...okay...
What rubbish. Evolutionary Theory would encourage the opposite to speed breeding by the most successful/strongest/agressive...rather than promote natural birth control.
The Vagina Quackalogues? Aaflaack!
I guess this is where the old saying...f a duck...comes from.
The same people that research homosexual necrophilia in the mallard anas platyrhynchos.
LOL.. could be another hilarious thread to read on... especially the replies.
we were interrupted by a loud noisy duck gang rape incident.
and still, not the worst date i’ve ever been on.
Known throughout his school years as "Birkhead, the Wannabe Gynocologyst"...never getting a prom date; being sent to the library by the other guys whenever a panty raid was planned.
Now, spends 20 years looking at ducks' heinies for a living.
Meanwhile, in his basement, he is secretely building the Drakeman Powersuit, to show the world what he is REALLY like....
"Tim Birkhead"
The writer of this story is so coked up, he can't come up with a name for the hero .. so he checks out the latest edition of 'The Sun' and discovers Larry Birkhead has succeeded in getting anything Anna Nicole off of the first pages and, by God .. we can't have that now, can we? ...So he steals the Birkhead name and voila! .. hero !
"at the University of Sheffield in the UK and colleagues examined vaginas and the corresponding phalluses from 16 wildfowl species. They discovered that the longer and more elaborate the male member, the longer and more elaborate its female recipient was."
Here's the real tip-off ....
Ducks are made like ducks to make other ducks .... geese are made like geese to make other geese ... ducks are not made like geese and vise versa.
Sheesh!
Uh-oh. The gay community thrives on stuff like that. The next time you hear shrieking ducks from a duck-rape it might not be male duck culprits!
LOL
That Daisy! ... what a tramp.
I'm going a little OT here, it was a thought provoking article and a good post.
Last I heard, these things were considered "animals". Must be a reason why.
I'm really hesitant to attribute human motives to animals. It demeans us as humans as much as it does the animal. They have no true mind or proven conscious, self-awareness, they just "are".
I think a lot of people who attempt to validate base human behavior based upon animals are dealing with personal demons that they can't easily dismiss.
Hmmmm...
Daisy Duck + duck raping...
Thank you for traumatizing me.
I will go curl up in a corner and shiver in fear.
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