Wednesday, August 6, 2008

Polygamous Swans and Lesbian Sex

Here's a strange statistic: Up to one quarter of black swan families include parents of the same sex. This is because in some bird species, "same-sex unions" serve as a parenting strategy to increase the survival of their young. In fact, pairs of males actually make better parents and provide more territory, food, etc. for their offspring. But aside from the prevalence of gay coupling, the reason why so many black swan families include parents of the same sex is because the number of parents in a family is not limited to two. That's right, swans have threesome parenting practices. Basically, because of intense competition for male mates, some females join into polygamous trios with another female and male to avoid being single. Not all of these unions turn out well. In competitive threesomes, the two females fight over the male and often maintain separate nests. In cooperative threesomes, all three watch over the same nest. What behavior distinguishes competative from cooperative? Why lesbian sex of course! Just like the bonono monkeys I discussed in my last post, the female swans engage in lesbian sex to promote bonding and familial cohesion. Incidentally, these "cooperative" trios produce more offspring than their non-polygamous counterparts.

1 comment:

Unknown said...

Tìm hiểu thêm về gout az tại đâyTìm hiểu thêm về gout az tại đâyTìm hiểu thêm về gout az tại đâyTìm hiểu thêm về gout az tại đâyTìm hiểu thêm về gout az tại đâyTìm hiểu thêm về gout az tại đây