When a cockerel is becoming mature does he assume a higher pecking order? And if a cockerel becomes mature before the hens will there be aggression problems? I recently put a juvenile crew together to accompany my lonely Salmon faverolle cockerel. He got coccidiosis and I had him confined for about a month. I didn’t feel comfortable adding him to my adult flock. I first put him with a younger cochin and they are the sweetest together. I got 2 Wyandottes and while in quarantine I noticed the bigger one plucking pin feathers out of the smaller one so I added the small one to the juvenile crew with no problem. I let a week or so go by and added the “ bully” and she came in and tried to continue her plucking behavior but my cockerel put her in her place. He did this before I could get pinless peepers on her. No blood is being drawn, they have 25sqft of run and 8sqft coop. But my bully is terrified of my cockerel. I know he’s doing his job at taking control but it’s been 2 weeks and she still runs and squawks and then he will peck at her as she runs by. He’s not been aggressive with me. I’ve seen him also peck at the other girls but it’s a squeak and over.. but whatever happened made this “bully” terrified of him. Help me understand his behavior? Is this just normal pecking order stuff or do hormones have anything to do with it? He’s been a big baby to me but now I feel like he’s being overly mean to this particular Wyandotte. He’s 4 months old and they are 3 months old. Thanks!