We have 12 chickens of mixed breed, 1 rooster, and 3 guinea fowl. We recently discovered (or figured out I should say) that 1 of the guineas is a male. All has been well, they all lived together the whole winter with no problems. 2 days ago we discovered the male guinea attacking one of the weakest chickens and pecking very aggressively and drawing blood. Shortly after the other 2 guineas and one of the chickens followed suit and were about to peck it to death. Does anyone know if this is common behavior of guinea's towards other chickens? We got rid of the male but still have the 2 females - do you think they will eventually keep pecking so aggressively?