This morning my 6.5 month old d'Anvers cockerel came at me spurs flying, bit me hard enough to draw blood from both hands (a very tiny amount, but still broken skin regardless and it's a behaviour escalation), and he had bitten down on my pant leg so firmly that it took effort to pull him off. Before now aside from being a grump on the roost and giving me nips if I tried to pet him or the pullets at bedtime, he was good. We left for about 1.5 weeks over Christmas and I assumed he would be aggressive when we first returned, but it's been over a week since we got back and his behaviour just seems to yo-yo. Sometimes he's fine, sometimes he's not. Yesterday afternoon I had them out free ranging and he was fine being held to ham it up for the camera. He seems to be the worst in the morning, but I don't know if this is because it's the first time seeing me each day or if he's just a grump in the morning. I knew when I decided to get d'Anvers that the males had a reputation for aggression, but he was so good up to this point so I let myself get pretty attached. The thought of butchering or even rehoming him to a non-pet farm is hard for me to consider, but at the same time I don't want to have to live with an aggressive chicken. He's pretty good with the girls. He doesn't bully them, calls them over if he finds something tasty, and while he hasn't exactly mastered the art of courting he doesn't force-mate either. If they scream and pull away he lets them go. Is this normal testosterone-laden cockerel behaviour and will he calm down with age, or is this something I can expect to only get worse? Because of winter the pullets still haven't laid any eggs, but I think they might be starting to get ready now. Could it have something to do with that?