I have a human agressive rooster and I'm planning on keeping 2-3 of the cockerels out of the chicks I've hatched. I plan to integrate them into the flock at around 8 weeks old. I need these new cockerels to grow into nice roosters. So far all the roosters I've raised have turned agressive at around 1 year old. I think it might’ve been caused by me letting them be lap chickens when they were young. This year I'm gonna try not handling them much. Question is will the young cockerels learn to be human agressive from the main rooster? Would it be best to remove the rooster from the flock as soon as integrate the young cockerels (and pullets) or can I leave them all be until the cockerels start to mature at like 6-8 months old?