My Delaware roo is only 6 months old and is already becoming too aggressive. He has two favorite hens already that he goes after constantly (even though he as 28 to choose from!!). He is more like a predator and a protector! Over the weekend he tore open one of the hens right under her wing. He doesn't even have spurs yet!! Her cut is about 1.5-2 inches wide and about 1/2 in wide and it's ripped open all the way down to the meat! She's in the house recovering for who knows how long and she is not happy about it. The other favorite has scabbed up scratches from him already! He is gorgeous and definitely warns the flock well, but I don't want to keep him if he is already tearing up the hens at only 6 months old! Using Gritsar's Rooster Reform page, we finally got him to understand that WE are the top roos, but he is just too aggressive with the hens when we does his "business". I think we may have to get rid of him.