People who publish scientific articles should be forced to declare their religious views at the top of the article so that if anything is listed other than "none" then it can just be automatically discarded unless it's replicated by a non-religious scientist. Religion just ruins everything, like running a computer with Windows.
I had a dog that would hump stuffed animals, didn't matter what kind of stuffed animal. Humans live by our culture, which is highly symbolic learned behaviour.
I'm guessing most animal behaviorists have priorities other than watching who is fucking whom. Unless we're talking long-term bonding pairs, which are much easier to observe, but those are not the norm in the animal kingdom.
The issue with finding homosexual behaviour in animals is that it's never exclusive. Homosexual animals tend to be bisexual at best, and can often be chalked up to erroneous mating.
A lot of these studies are used to validate human homosexuality and harm the "it's unnatural!" argument touted by conservatives. However using a Call to Nature is fallacious, and could be used to validate all number of animal behaviour.
I mean that's cool and all but that's not really a debunking of biblical creation or sexual order if you take it at what it says and not what traditional religion tells you it says. There wasn't supposed to be death, so animals shouldn't have eaten each other. It also describes something like an asexual heaven. So even if homosexuality isn't in the eternal perfection, everything now is imperfect so it's just like everything else.