I'm feeling terrible. Our banty hen had laid an egg with a small amount of blood on it. I didn't think much of it until I saw the young Road Island Red Rooster with her (he's about 6 months old). He was pretty rough with her and she seemed to be the target of his "affection" as the other hens are larger. I went away overnight on a business trip and have now found her dead. I'm feeling horrible.... Could it be he was too big for her to handle? Can you mix small and large breeds? Any advice would be helpful as I would like to get more bantys but won't if we end up keeping this rooster.