They are totally seperated, so there's no cross. Our silkie pen is 100% silkie (none carried showgirl genes). But if you choose the showgirl eggs, there's a small % you could get a lav/split silkie who will carried the showgirl gene. The Lavender/split silkie pen have: 1 lav silkie roo + 4 lav silkie hens + 2 black silkie hens(my award winning blacks). All 100% silkie. The Shgowgirl lavender/split pen have: 1 Lav silkie rooster + 2 Lavender showgirl hens, 1 split showgirl hen and 2 black showgirl hens. Thanks for looking.