So I got a showgirl from a breeder and hatched lots of babies from him before I lost him to a cat. I believe he was an F5 showgirl. I sold a chick to a BYC member who lives 10-20 mins from me the chick was from my showgirl pen but had normal neck feathering. He has grown up into a beautiful rooster and has the perfect dark silkie comb color but its Single! He is nice too leg feathering is nice a little leggy nice tight wings. I had never had single combs pop up in ANY of the chicks I hatched. So I couldn't figure it out till I went back through my breeding books and figured out the chick had came from my showgirl pen. I know to make the showgirls turkens were introduced and turkens have single combs. So this is possible for a single comb to pop up right? I lost my roo but have a new showgirl hen who is an F8 could I still see a pop up of a single comb? Thanks for any advice in advance.