I've seen WCB Polish x Black Jersey Giant which resulted in a totally black bird with a black crest.Hey guy, I thought this thread is about white crested black polish. Anyways, I use to breed mille fleur d'uccle rooster to oegb, bantam ameraucana, dutch, belgian d'anver, and serama. They come an unusual color patterns, like white, black, quail, black breasted red, silver, splash, and pumpkin. About the white crested black polish, have you ever try to cross breed to other non polish?