I have had my hen for about 5 years and my rooster for about 5. Recently he as been viciously attacking her. Why and what to do about it?? I am just so upset and need answers!! Hen is a Blue Cochin Rooster is a Barnevelder. I have 2 Hens and 1 Rooster. I had 4 hens, 2 passed last year. A hawk got one and her sister died not soon after.