Name: Anonymous 2010-04-30 16:02
Keep male ducks at bay.
http://www.guardian.co.uk/science/video/2009/dec/22/convoluted-female-genitalia-ducks
High-speed video and life-sized models of female duck genitalia were used to investigate whether spirals, dead ends and hairpins blocked fertilisation by unwanted males.
http://www.guardian.co.uk/science/video/2009/dec/22/convoluted-female-genitalia-ducks
High-speed video and life-sized models of female duck genitalia were used to investigate whether spirals, dead ends and hairpins blocked fertilisation by unwanted males.