(Picture: Sylvain Thomas/AFP/Getty Images)

Let’s talk about the birds and the bees, or specifically, one type of bird.

The world of duck sex is actually quite serious, so hold your laughter.

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The shape of the duck penis and the shape of the duck vagina mean they go at it in an extremely unusual way.

Well the way they go at it is rather unsightly, but the mechanics of duck sex is quite interesting.


You dirty dogs (Picture: Damien Meyer/AFP/Getty Images)

A male ducks penis exists within a sack in its body, and during sexual intercourse, the male’s penis becomes erect and ejects from the sack.

At full length, the duck’s penis can reach 20 cm – but that is not the interesting part.



A duck’s penis is corkscrew-shaped, with ridges and backward pointing fleshy spines.

If male ducks hang out with other male ducks their penis enlarges (Picture: Getty)

(Picture: Artur Widak/NurPhoto via Getty Images)

The male duck isn’t the only one with interesting sex organs as female ducks have a corkscrew-shaped vagina.

Female ducks have long twisted vaginas that have a number of spirals, however, the female duck vagina also has some dead-end pockets that they can engage if they do not want to be fertilised by the male duck that is mounting them.

Oh yes, and the mounting – it’s pretty graphic.

The male duck rather aggressively mounts the female duck and lines their penis up with the vagina, once it is in position the male’s penis explodes outward penetrating the vagina, in one-third of a second.

Female ducks can open themselves up to the male duck by lifting their tail feathers, and relaxing and contracting their vagina.

Since ducks are aggressive creatures, one in three duck mating events are rapes, and three or four ducks may attack a female duck at once which sometimes results in injuries and death.

There he is, in all his twisted glory (Picture: Shutterstock)

Ducks are some of the most aggressive lovers (Picture: Getty)

These forced penetrations have meant female ducks have evolved in such a way that their vagina can trick the male into depositing his sperm in a dead-end and thus they avoid unwanted pregnancy.

Researchers at Mount Holyoke College, Massachusettes have now found that a male ducks penis enlarges when he is around other male ducks who are his rivals in the mating game.

The penis getting bigger is a way to ward off the competition.

The study is still ongoing and now the question is does the growth in the male duck’s penis give him a competitive edge in the duck sex game?

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