I have this Ameracauna, Fluff. She was the sweetest, most docile (with me) chick. She took over as lead of the others right away, but was still very sweet even to them. They are all about 8 weeks old and just a few days ago, Fluff just started being crazy to the other chickens-chasing them, jumping on them. I have to use gloves to pick her up now, because she pecks me really hard! She's also recently gotten this mean look in her eye--none of the other chicks have it. I've actually been separating her sometimes to give the other chicks time away. Is this just normal chick behavior? I've asked over in gender to see if maybe she is a he. Help?