Since your saying their cockerels. My best answer would be their acting just like teenaged boys. Their in love & will fight over the woman. Sounds normal to me. Just keep an eye on them because it could get bloody again. You might have to get rid of one if this happens are seperate them till you get more hens.JMO. I've never had this problem. I mean my main roo hasn't shed blood from my two cocks he just chases them around & they run from him. Good Luck with the boys. Boys will be boys.Everybody is in their first year...all the girls are laying,and have been for three months about; the 2 boys (I guess they are still cockrels?) are the same age and have good sized spur bumps, but nothing sharp there yet. I don't want to add any more girls until spring, hoping five will do them each. I also suspect there may be some "I like you better" swapping around between the girls. And at least one if not both boys is fertile and doing his job.