I have two 4 week old possible roosters who are absolutely vicious. They attack my hand and the other chicks. Drawing blood and pulling feathers. I have them seperate from the others and each other. Is this a stage? My 5 month olds did not go through this. Is it time to cull? Both are bantams, one a sultan and the other is a feather leg. Think it's a cochin. Need Advice. I don't want to cull if it's not needed.