I got 7 chickens, 1 boy, and 6 girls. I got one silkie in the mix and there all 4-5 months old. Well since my silkie is smaller they like to peck up and pick on her. there are no grabbing feathers yet just pecking. She sometimes jumps back at them cause she doesn't like it but she also creates cause she hates it so I intervene a lot. How do I stop this?