Rath on 04 February 2010
@Bimmylee.
http://en.wikipedia.org/wiki/Homosexual_behavior_in_animals
We are animals and animals do for some reason engage in homosexuality. Black Swans are especially interesting as they form monogamous relationships like humans in the western world, they do a sort of 'fertility clinic' as well so that a homosexual pair can raise cygnets.
