Art of Woman

Male menstruation

New Scientist magazine, 9 December 2006, page 16, has a short article about males having a version of the menstrual cycle! How amazing is that! It talks about males having fluctuating fertility and sperm production. I wonder if further research will show that many species have these fluctuations. Certainly many species have a specific fertile 'season'. The range of sexual and reproductive strategies in the natural world amaze me.