Latest update: it's been 3 weeks since my last post about my lone survivor Guinea. I finally determined she was actually a he. The aggression towards my bantams and all my other chickens not only continued but steadily got worse, to the point it was like he did not want the chickens to eat or drink. I didn't have time or material on hand to seperate them so I relocated the adult male to greener pastures. So now I have 5 bantams, 4 RIR pullets, 6 chickens and 10 guineas. They are all approx the same age +/-4 days and they all roost together, forage together flock together with no aggressive behavior from any of them. I have 3 white chickens with black spots and feathers on their feet and 3 black chickens that are hanging with the guineas a lot. These 16 birds were all brought home the same time and put in the pen together at the same time. My bantams and RIR's were brought home 3-4 days later kept inside under a headlamp for a few days then turned out with the flock. All these birds kinda hang toether. Has anyone experienced this type of behavior and do you think my guineas will become bullies as they become adults? They free range all day and only come to the coop to roost or for water. Thanks