Would anyone know why and how that would happen? It seems to have happened overnight. He is a young guy, but he and the 4 others have been integrated since December and he's already been mounting some of them. I've only seen one hen challenge him and he doesn't back down, so I can't believe that one of them is getting close enough to pull out those feathers and he would just sit there and take it. The bare spot is at least 2 inches down his neck and up to both ears.