For the past year, I’ve had a small flock of four who grew up together- two Speckled Sussex hens, a bantam mix hen and a Sebright mix bantam rooster. They’re all about 2 years old. One of the Sussex, the alpha hen, was killed by a hawk last month. I’ve been wanting more hens but was planning on waiting until Spring. However, we were approached by a friend who needed to get rid of his hens ASAP for personal reasons. We decided to take a few on the spur of the moment. We chose three very friendly, hand-raised hens. I’ve read a lot on here about the proper way to introduce chickens, but had neither the time nor the resources to manage a proper introduction. Big mistake on my part. I introduced the two groups in the evening and everything seemed to go okay after a little show by the rooster. One of the new hens challenged the rooster but soon backed down after a few pecks and chasing. They slept on opposite sides of the coop. The next day, the old group and the new group were on opposite sides of the run every time I checked them. The new hens would scoot away from the rooster if he got too close, and he harassed them a bit but nothing overly aggressive that I saw. The two original hens wanted nothing to do with the new hens but they did not peck at or chase them. They’re pretty wimpy. That night, I noticed a bit of blood on the comb of the chicken who challenged the rooster. She seemed okay otherwise and the rooster was already asleep on the roost so I did not separate them. Everyone seemed decent to each other this morning. I went into work, but checked in on the chickens occasionally via a web cam pointed at their coop & run. Again, the old group and the new group were on opposite sides of the run but everyone was scratching and pecking the ground and I didn’t see any aggression. I did notice the rooster walking into the coop while the hen who challenged him was inside, and she came flying out about 10 seconds later. When I got home I noticed that she had more spots of blood around her face and comb and also on her neck. I moved her and the other two new girls out of the coop, and they are spending the night in my basement. The new girls grew up without ever meeting a rooster, and my rooster seems to be taking on the role of alpha hen. My husband wants the rooster to go, but I’d like to try to make it work, by obtaining a second coop/run and giving them lots and lots of time to live separated from but within sight of the rooster. Is it too late- did I already cause irreparable damage? Will my rooster ever accept the new girls?