I searched the archives, and I realize that aggressive rooster behaviors can be common. I wanted to get insight into our particular problem. Had an existing flock of 8 hens and a very docile silky rooster - of varying ages. Two hens were at the top of the pecking order - the oldest hens, probably 4-5 years old. About 6 months ago we added 6 chicks given to us by a friend. Very active, fast chicks that we could never hold or catch (Rhode Island Red/Americauna mix). One of those chicks has turned into a very large rooster. We lost one of the top hens to a dog attack (I think), and now the Rooster is unleashing all his fury on the surviving hen. She stays huddled now behind our wood pile. Every time I am out there, she is either not there with the rest of the flock or being attacked by the Rooster. He's pecked her comb bloody and a lot of her head feathers are out now. Our hens and roosters are pets. We do not eat them. That being said I am entertaining the idea of giving the Rooster away (although I am of the mind that people should stick out their problems with their pets). I really do not want to have to keep them separate, although I've locked my hen up safely away for tonight. I just hate to see her beaten up. Is this inevitable behavior for an adolescent rooster to establish pecking order? Will he kill my oldest hen in order to do it? (As an aside, he is not aggressive with me, my children, or really any other hen, especially his sisters (gross), but I have seen him peck at a few from time to time (one of them has a leg injury, which a whole other topic!). Thanks in advance for any help. It is much appreciated!