I have a flock of 9 adult chickens outside right now, 6 hens 3 roos. I'm finding homes for 2 of them, which are both bantams, because they've been at each others necks lately. The roo I'm keeping is an Ameracauna and he is a sweetie. He's never been aggressive towards me or any other person but he's very protective of his girls. I'm introducing younger chickens soon, all are hens except one meat rooster (I think I'm gonna keep him separate). Are roosters typically aggressive with new hens?