Does any one else out there have a mixed flock that segregate themselves from the other breed of chickens? I have 4 R I's, 2 silverlaced Wyondottes and 2 EE's. They free range all day, the 4 RI's are always together, the Wyondottes are always together as are the EE's. I find this strange since they were all raised together and are the same age. They all get along just fine together just stay in their own little groups. Any thoughts???