So... er.... how much do you know about duck vaginas...? There are a pet favourite subject that my friend Jules Howard often talks about at conferences, with a whole chapter dedicated to ducks in Sex on Earth. I was pleased I didn't have to draw an actual vagina when illustrating the book, as they are spectacularly complicated. Duck penises are too, and with male ducks being rather promiscuous, the threat of infection from STIs to female ducks is high - so a duck's vagina is kind of like a booby trapped lair of a super hero. She will only allow the healthiest males to mate with her.
And that's possibly the weirdest way to then link to my Etsy shop (where you can find original illustrations and prints) ever.... :)