TheFatBlueCat
Crowing
Most of the cockerels I raise have gone to freezer camp by 15 weeks for exactly these reasons although I've never had one be aggressive to people, just hormones coming in to play and causes general havoc. My advice is to butcher him or find someone who wants to eat him (I have a couple of families who take all my cockerels).
When having a rooster in a flock you are best to introduce the rooster or cockerel to mature hens. Roosters mature faster than hens, meaning that same-age hatchmates will run into trouble as the cockerels will be trying to mate with pullets who are not ready. Fully mature roosters with grown hens available will not mate with pullets until the pullets have sexually matured. Or they shouldn't. If they do they're not a good rooster.
When having a rooster in a flock you are best to introduce the rooster or cockerel to mature hens. Roosters mature faster than hens, meaning that same-age hatchmates will run into trouble as the cockerels will be trying to mate with pullets who are not ready. Fully mature roosters with grown hens available will not mate with pullets until the pullets have sexually matured. Or they shouldn't. If they do they're not a good rooster.