Pigeony
Crowing
Roosters should be protective of chicks and their broodies, not aggressive to them. My rooster has not ever been actively mean or aggressive to any chick, even introduced ones who did not have a broody to protect them. He feeds chicks and looks out for them, that's what good roosters do. You have a bad rooster if he's attacking broodies and chicks and that behavior shouldn't be tolerated.