My husband's co-worker gave us 5 black Astolorps when moving away to add to our 3-breed flock of 12 . The only problem with these beautiful year-old Astrolorp hens the owner told us, is that one constantly attacks at least 3 of the other 5, This is still continuing after one year. Now, she is attacking also some of our original flock, and we don't know what to do about it. She jumps on their backs and attacks their neck and also their heads. One looks as if she may have gotten pecked nearer her eye as well. I do want to eliminate the thought of over-crowding as "Storey's chicken book suggests; there is plenty of yard and coop space. Have any of you dealt with a mean hen such as this and know how to STOP this angry pecking? .