A large fowl Black Cornish hatched from using a WC of Herring blood over my DC hens. With him used over one of my double laced blue females, I can develop a blue line, though guessing they might have a tendency to throw some males with red on their necks or shoulders. Both of the mentioned project colors I have [I'm calling them that because the APA doesn't recognize them in the large fowl Cornish] carry recessive white; about 1/4 of their chicks will be white. I like raising the White Cornish best; both because that variety is rare or endangered and they dress out as a cleaner looking bird when plucked..