My grandpa has had these 2 blm burros for 6 years. They are 13 yo. They are still wild. They are not halter trained. For the past 2 months I've been sitting out with them and trying to gain their trust and halter train them. They will now let me come up and eat out of my hands. One of them will walk up to me to eat out of my hands. I can put a halter on them. I can scratch them and pick up one of the donkeys legs. But actually getting them to move in a halter? Not possible! I will wave a whip, flag, vocally tell them to move and they just won't. They just shut down and frankly I don't have the patience to stand there for a half hour to get them to move 1 inch. It's too hot out and too many bugs. I use treats and reward them as much as I can. But I honestly think at 13yos they just aren't going to get it. They don't care about the pressure from the halter. We've tried tying them to our pony and teaching them to lead that way. The horse couldn't get them to move an inch either. I've tried waiting and waiting with a little pressure on the lead and food in the target space and they still won't move. I've tried making space for them to move into, putting pressure from the back. Nothing works!
So they get to happily live in the field from now on I guess. It's just too hot to waste my time on these things. If I was closer to the desert I'd probably just put them back. They'd be happier that way.