My replacement flock consists of 3 Silkeys, about 4-5 months and 2 month polish, easter Egger, and Wyandotte. We gradually put them together with minimal problems. The biggest Silkey can be a bully at times, but all is well overall. -The 'little girls' and the big girls sleep seperately, (Silkeys on the floor) in the coop, and relate minimally in the run. They free-range as seperate groups to, with the Wyandotte at times joining both flocks. ---Is this going to continue as 2 flocks? It sure would be nice to go looking for one group.