I have 7 guineas. They pull the feathers from our chickens, they run the chickens off from their food...off of their roost and a rooster off of the hen!!! No kidding..my buffs were doing their nature thing and one of the guineas run and rolled the rooster right off of the hen. They were raised, fed, and roosted with the chickens until they became violent. Will they get meaner? Should I get rid of them? They are free range..should I keep them up? I have watched all 7 of them chase a single chicken all over the place...will they kill a chicken? DJ