My Serama hen hatched 9 chicks about 5 weeks ago. Everything had been going fine but today 2 of the chicks started fighting and the winner kept attacking the loser and it was pityful. The poor thing kept running and screaming, Mom couldn't stop it, so I removed the hurt chick and put some medication on it's bleeding head and took the bully out of the pen. I put the hurt one back in with Mom and the other chicks. I have never raised Seramas before, why was this chick so vicious. I have the bully with two older pullets. I am afraid to put it back with the others. Am I doing the right thing?