I got my first bunch of chicks two years ago (Rhode Island Reds), all hens. After about one year, the chicken who seemed to be at the bottom of the pecking layer slowly began to become aggressive towards myself and my dogs. She would walk up and down the side of the dog pen, puff up and fly at one of my dogs who was extremely irritated by this. My other dog was calm and could care less. This dog has always been fine being out with the chickens, never bothered them at all. When he would be out, she would wait for him to pee or poo and then she'd come out of nowhere and aggressively fly at/peck him HARD. At times she would do this to me and then my husband. It would be very random at no specific area of the yard. This became increasingly worse so a month or two ago we put her down
None of the other girls ever acted that way. Last week I noticed one of the other chickens just beginning to do the same thing the other had done! She walks up and down the dog pen instigating the dogs and when she is in the way and we try to shoo her, she flew at us! This is exactly what slowly had begun to go on with the other hen. I have never heard of aggressive hens so I thought we just had a weird chicken, but now that this one seems to be following the pattern-what is going on? Is this normal? Is there supposed to be a "protective hen" yet who is not at the top of the pecking order?
