I started with chickens with 6 silkies, as well! I had two whites, two blacks, a blue and a buff! I thought I had 2 Roos and 6 pullets...but then one of the white ones started crowing at 5 months old...I guess he was just a late bloomer. I had to give the two whites to a friend because the other two Roos (the buff and blue) were picking on the whites who were always together and then my buff got attacked by a predator so now I'm down to 3 but that will be growing eventually.