How hard are they to train?
The ones I've been around are cantankerous little $#its.
I found them to be extremely easy, but by easy I don't mean fast. Mine don't have a mean bone in their body but I think it's due to a long steady positive experience and no treats. They're not nippy or constantly looking for a hand out. They love to be brushed so I always used the grooming brush as a treat. Pick up your foot, you get brushed. Move over, you get brushed.
I found my two on Craigslist. A jenny ( named her Damascus Steel) and her six month old colt (Rimfire). Had him gelded. They'd been in a twenty acre field with a few sheep for I don't know how long, so I had to pretty much, start from scratch. The jenny would let you pet her a little but the colt was pretty much untouched and very skittish. She was extremely protective of him so I had to be very careful not to overstep the boundaries. I started out by just taking a chair down to their paddock two or three times a day and reading a book, pretty much ignoring them. Think I did that for about a week. The colt became a little braver and got closer every day. I put one of my work gloves on the end of a stick and eventually he touched it with his nose. He took off like it had bitten him, but curiosity brought him back, and after a while I could rub his face with it and then his neck etc. Finally, I was able put the glove on my hand and stroke him. Just worked on that until I could touch him all over. I'd do that while they were eating their hay also. So they associated touch with the pleasure of eating. Even now, I'll often lean and hang all over them while they eat and they couldn't care less.
I halter trained the colt by putting the halter on top of his hay. Boy, he didn't know what to do. He wanted to eat so bad but he was scared to death of that "thing". After snatching little stalks from the very edge and realizing the thing didn't jump up and eat him alive, he became brave enough to eat all around it and then, finally, through it. Once that became the norm for him I attached baling twine to each side of the brow band and ( I was on the other side of the fence) slowly raised it so the nose band was on his nose. The next time I raised it higher and after a couple of days got it all the way over his ears and buckled up. did that at every feeding for a few days. Added a lead rope and let him run around dragging the rope. He'd accidentally stand on it, giving him a jolt which taught him to stop and think without freaking out.
So all that to say take everything slow and steady, lots of praise and loving on them and they grow into sane, level headed, willing animals.
There are actually some very nice, partially trained burros up for auction on the BLM wild horse and burro site. They're trained by the inmates at the correctional center in WY. - It's killing me not to put in an application and bid
but the closest off range holding facility they ship to, for us, would be Ewing, Illinois. A bit too far. I'm hoping there will be a satellite event over here at some point.
There are little videos of them in a pack string:
wildhorsesonline.blm.gov
wildhorsesonline.blm.gov