Still think its strange. My two geldings are running with five mares and none of them have any problems. Never have really. Of course, they all have their "pecking" order, but no real fighting. Now we let a friend keep her mares in the field for a little while and one of her mares actually hurt a couple of the other mares, but no gelding issues. Guess I just am lucky! I've always kept mares and geldings together.