Join Date: May 2009
Location: Winnipeg, Manitoba, Canada
Aaaahhhhhh. I was a little confused at first, but when you explained a little more, I can tell you almost exactly why she does this.
It's not a "training method" per say. All horses like their butts scratched, and foals even more then most. I swear you can scratch a baby's butt for thirteen hours and not have them get bored. So if "proper" training isn't able to be done, by always scratching their butts, she's made them "half-assed" catchable. It's not that she's necessarily been purposely trained to turn her butt to you, but with lack of handling, she's learned that's about the only thing you're good for and the only reason why you're there, so her owner has encouraged this behaviour in her foals to prevent them from becoming scared of humans.
Either way, I would never encourage it. I don't mind it in adult horses, Eve does it all the time, it's hilarious - if you're standing the pasture, she'll zero in on you and then as precisely as backing up a Mac truck into a stable, she backs her butt into you. She'll stop about two inches away, glance back, and if you haven't commenced scratching, she'll carefully back up so her tail brushes you as reminder. In a horse like Eve, I do not mind this - she has already been taught that kicking isn't acceptable, and she ONLY does it if we're standing around scratching other horses. She has learned it's ok to do if we're standing around solely for the purpose of scratching bums.
In an unhandled youngster who's never learned kicking isn't acceptable, it's definitely something I would work to correct. This will be much easier once you have her on your own property and can work on getting her handled more and teach her that facing you for treats is more fun then having a bum scratched. As soon as she learns that grain is yummy, I can pretty much guarantee that by standing behind her and shaking a bucket and refusing to scratch her, she'll start turning around on her own. Reward her properly for this action. I would not resort to any scare tactics because she's not doing it aggressively, she just thinks that's how it's done. Good luck!
I hope God tells her to smash her computer with a sledgehammer.