I recently just purchased a two year old 12.3 hh pony (gelding). When he arrived on my property I placed him a field by himself that was adjacent to another field where the rest of my horses are. The rest of my horses (all mares) consist of two +16hh warmbloods, a 13.3hh pony and a 14.1 hh pony and they all get along. At first they were all inquisitive about meeting the new pony over the fence, but now one of my warmbloods will go out of her way to try to bully this new pony. She will charge across the field if she sees the pony coming to the fence, will pin her ears and try to bit & kick at this pony through the fence. My other horses also don't seem to like this new pony and will also bit and pin their ears when the pony comes close but at least not to the extent that my other one does. I would like to integrate this pony into my herd but I am fearful that he will get beaten up quite badly. I wouldn't be so concerned if he was bigger but he is 12.3hh and I'm afraid he won't be able to hold his own. I was just wondering if anyone has any ideas of how to safely integrate him into a herd. Thanks!