I can relate to your story, had a similar experience. I have 3 roosters, one is around 3 years old and the other two are 6 months old. The older rooster (Beau, an Americauna) is very protective of his 37 hens and has warned the hens many times of hawks and dogs intruding in their territory. He has broken up several fights between the hens and does a good job of keeping the peace around the chicken yard.