I have 8 guineas and 40 chickens. The guineas have been raised with my chickens, I got them all at the same time brooded together and everything! They free range during the day and all my birds go into the coop at night on their own. They are just turning 4 months old and my guineas are ripping the feathers out of my chickens even my rooster! They do it in the coop as well as when they are free ranging. I've sat and watched and everyone will be moving a long digging and eating whatever and ALL OF THE SUDDEN...a guinea charges and yanks out some of my chickens feathers. I've tried seeing if it was related to what they were eating or a certain "area" of the yard...nothing! my coop is actually large enough to hold 80 birds (we went extra big in case we had chicks we wanted to keep). So anyone know what all this crazy guinea action is about? I'm heading to our feed store today to pick up some feed with higher protein and to see if they carry any "no peck" sprays. Any advice is appreciated!