I am a novice chicken owner and have recently acquired seven chickens; 2 Wyandottes, 2 Welsummers, 2 Ameracaunas, and 1 Cochin. I have spent a lot of time watching and enjoying my new critters, but I have noticed that one of the Wyandottes gets 'picked' on a lot. I have named her Wanda and it seems one of the Ameracaunas and the Cochin take great delight in cornering Wanda in the coop and pecking her. For seven chickens they have an 8' x 12' coop with an 8' x16' outdoor run, plenty of food and water, and four nesting boxes. Why are they picking on Wanda??