PeterZ wrote:rmsgrey wrote:
One obvious survival advantage to having gay relationships is that, when resources are scarce, not having kids to compete with your siblings' kids gives your shared genes an advantage over another tribe that ends up starving themselves out...
There would still need to be a trigger or in times of plenty, the advantage reverses. Has there been any studyies on the corellation between homosexuality and popluation desnity?
Spot research suggests that research into homosexuality in animals is ongoing. I'd guess that, if research hasn't been done yet, it will be in the next ten years or so.
Something that does come up in my scan of some literature on the topic of animal homosexuality is that male-male couples among bird species will happily adopt and raise an egg.