That pretty much sums it up. I have a 16 wk old roo that is grabbing the hens by their head feathers with his beak. So for no one has been harmed but is just seems kind of strange. He is a good roo, shy around humans and not aggressive so this kind of behavior seems a little strange for him. Is this pre mating behavior or just outright aggression?? Any advice would be great. Thanks BYCers.