were fathered by my barred rock roo 10 days PRIOR to seperation from my actual "breeders"? I was expecting black australorp chix and at 2 wks age they OBVIOUSLY had barring on wings SO , and I have other theories, since the eggs i started to save were laid 8-10 days AFTER I removed the barred roo from the equation is it POSSIBLE that his sperm was still active in some hens? and after the hens were seperated from rest of flock/barred rock roo they WERE in with a black australorp roo during this time.