I have six 10 day old blue cochin bantams (sooo adorable!) and they fight ALL the TIME! I've never had any type of bantam and only one cochin before, so I'm not familiar with their behaviors. I bought them straight run and I'm afraid they are all roo's!!! Are hens aggressive too? I'll try and have pics of them tomorrow. I know they are not crowded because there's nine bannies in a water trough like they use at TSC so they have plenty of room to run!