Join Date: Jan 2011
Location: North Dakota, USA
Keep the fence between them for a while. You could do the one on one intros. How big is the field that they are in? Would he have enough room to escape them? More than a few acres would be best. Otherwise, just start with the one on ones.
Depending on how well the horses respect you, you could try walking the newbie in the herd. Do not do it if any of them do not see you as alpha. Use the lead rope or a cue stick to stifle any aggressive behavior to the newbie. I did this with our new 4 month old. It not only reinforced to the herd my leadership but also showed him it. It helped him learn that next to me was a safe place. Even after he was able to be put into the herd, there were still some scuffles. I don't think he had learned yet how to respect other horses very well.
Again, unless you have dominance of the herd and total submission from them, do not do it. It will become a very dangerous situation for you very quickly.
No matter when you do put him in, there will be bites and kicks. It's inevitable. It has to happen for them to set the hierarchy of the herd. He will get chased. He will be kept away from a hay feeder at first. Once he has learned his place, they will let him in.
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