We just returned two of our five pullets back to the flock after being in County Fair for 10 days. One of the hens we took to the fair was the dominant hen however after placing them back to coop (at night) the next morning we observed she had bloody wounds to her earlobe, comb, and wattles. Letting them out to free roam we then saw to our surprise it was the most inferior hen that was the cause to her injuries, who by the way has been object in past to frequent neck biting from the dominant hen. We quarantined the now newly aggresive hen testing her daily during free roam time to see if she continues in her attacks wich she does(on day three). Weve clipped nails to inhibit futher slicing but not sure of what will bring peace and harmony back to the flock. Any suggestions or experiences?