I have found it very difficult to impact their group dynamics. I’ve had several become “fringe” and several “outcast”. In my flock, the fringe are all girls and are part of the flock, but made to keep their distance, maybe 20-40 ft. I think that the flock designates fringe girls to be sentries...
Hi Cassandra, welcome to BackYard Chickens!!!:welcome
Guinea fowl aggression certainly happens, they are pretty cantankerous birds. Where are you located? How old are your guineas? Were they all brooded and raised together? How are they housed? Are they free ranging or penned?