X3. Excellent advice By and large I've found the worst behaved cockerels were raised either as pets or only with pullets their own age so they were always at the top of the pecking order. The best roosters are ones that had to come up through the ranks so to speak. Even if incubator hatched I integrate my chicks with the flock as young as possible.
Sometimes a juvenile cockerel can be a little rough with the younger pullets but NEVER mean and never aggressive to people. With so many nice roosters needing homes I can't think of any reason to keep a mean or nasty one.
