Ok, I tried on the 'chicken behaviours thread', but got no response, I'm relying on you, the regulars of this thread. I have three big hens, two little hens, and one bantam rooster. Whenever I let the big hens near the little hens, they mount them just like the rooster does. It's awful, one of my girls got a bleeding comb this morning. Why are the big girls doing this? Why has the introduction of a rooster created this new dominance behaviour? I guess I just have to keep them all seperated.