I kept five guineas in my chicken pen for a year with seven chickens and they got along fine . I tried to put my five month old pullets in with them but the guinea hens attacked them so I put the guineas outside so they could run with the eight five month old free range guineas (six hens and two males). The outside guineas viciously attacked the two hens and and ran them off. I now have to feed and water them in the front pasture and they run off if the others get close. Does anyone know what is going on?