Photo Courtesy of W. F. Lamoreux, “Fig. 62. Ancobars, i.e., Anconas to which barring has been added. The usual difference between the BB male and the B-female is heighthened in this breed because both sexes are homozygous for mottling, which, like the barring, reduces pigment in the plumage.” on Genetics of the Fowl: The Classic Guide to Chicken Genetics and Poultry Breeding, 1949