Yes, It's the effect mercury has on this animal. What I was insinuating is that who's to say we won't find some similar link to homosexuality in other species, thus debunking the theory that homosexuality is something one is born with.
As if religions ever had a problem with making unreasonable demands. "Stop being gay" is no more ludicrous than "don't sin" when sin is defined as all the normal human urges.