I’m looking for insight from someone familiar with flock dynamics/behavior of guinea fowl. I wanted a mixed flock of chickens (7), ducks (6), and guineas (15) to use a common coop, so I hatched all three sets of eggs together and brooded together. Later, all were added to a coop and run with five older, point of lay pullets and a cockerel. This arrangement worked until a few weeks ago. At about 3.5 months of age, the guineas began attacking the six young pullets and a young cockerel. They attack en masse and with what looks like serious deathly intent. The gunieas are now separated with their own separated portion of coop and free range, so no access to the chickens and ducks, who have the larger portion of the coop and all of the run. When I tried letting chickens and ducks out for supervised free range, guineas immediately attacked young chickens again, but are leaving older chickens and ducks alone. Any insight into why they attack the young chickens, and whether this will change with time or they can never be with each other, even supervised? Will they start attacking the older roosters and hens that seem to have the upper hand right now?