I have a mixed flock. Some sleep in the coop and some and the roo sleep outside in the pen (enclosed) by choice. I've had the roo a year. The outside gang , ROO included have been attacking my other hens, 3 in particular. They gang up on two of my Polish girls, and the roo runs and pecks my Jersey Giant girls, like chasing them away from the snacks. I've never seen a roo be nasty to hens. Anyone have this happen or heard of it?