It doesn’t mention any historical examples from before 1990 due to cultural prejudice but I’d be shocked if the Greeks and Romans didn’t write on the subject, being such avid observers of the natural world. Sounds like a fun research project for a historian, I’m sure it’s out there.
https://en.wikipedia.org/wiki/Homosexual_behavior_in_animals
Like, all of them. But for specific examples:
https://en.wikipedia.org/wiki/List_of_animals_displaying_homosexual_behavior
It doesn’t mention any historical examples from before 1990 due to cultural prejudice but I’d be shocked if the Greeks and Romans didn’t write on the subject, being such avid observers of the natural world. Sounds like a fun research project for a historian, I’m sure it’s out there.