Do you have does that you want to get pregnant? He is of breeding age... My 4 mo old buckling already bread one of my girls I believe since she didn't come back into heat, so he is of breeding age... I put him with the girls first when he was 2 months... Yeah he got picked on but the little stinker wanted nothing to do with being in by himself he kept getting out to be with them. When he was 3 mo, I had to separate him from the girls, and I put him with the boys.... Same thing happened but within a couple days they all got along.... He is now in my "buck" pen and not really liking the other buck, but he's dealing with it I'd say if he's wanting out then leave him by himself, and if he isn't then just let him go through the pecking order...