I have ten chickens, 3 Buffs, 3 Barred Rocks, 3 Silkies and 1 Polish. My problem is one of the Silkies keeps getting bullied and pecked at to the point where the back of her neck is bloody. I have removed her from general population and brought her into the house to heal up so she is out of harms way. This is the second or third time this has happened. What can I do or change to stop this behavior? Thank You.