What posture do bush-people use during intercourse?
I’m not saying you’re a racist and a rapist.
But … wow. Your question is racist and rapey.
There aren’t a special subset of people that fuck differently than any other type of person. And unless you’re an old-time scientifically racist anthropologist, why in the world would you attempt to spy on other people while they’re having sex?
Ick. Just ick, in more than one way.