1. WHITE.
Albinos.—These seem to be of two different origins:[9] White Cochins and white Silkies. The white Silkies that I have studied have the gametic formula cJnwx; i. e., they have the Jungle-fowl marking, but lack the "color enzyme," supermelanic coat, the graying factor, and the xanthic factor.
"Grays."—White Leghorns and their derivatives belong to this class. Its gametic formula is: CJNWx. This indicates that the race contains the color enzyme, as well as the Jungle pattern and the supermelanic coat. But all of these are rendered invisible by the graying factor W. The superxanthic factor is missing.
2. BLACK.
The uniform black birds that I have studied are of several sorts. The Black Minorca and White-faced Black Spanish have the gametic formula CJNwx. Owing to the absence of the graying factor and the presence of the color factor these appear as pigmented birds, but the supermelanic coat, N, obscures the Jungle coloration, so that the bird appears entirely black. Nevertheless the black is not of uniform quality, but just those parts of the feathers of the wing, back, hackle, saddle, and breast that are red in the Jungle fowl are of an iridescent black, while the portion that is not red in the Jungle is of a dead black.
The Black Cochin has the gametic formula CINwx. This differs from the formula of the Minorca only in this respect: the Jungle pattern is present, but not the pigmentation that is usually associated with it.
The Black Game ("Black Devil") that I used in a few experiments seemed to have the same gametic formula as the Minorca, only the supermelanic coat was less dense.
3. BUFF.
For this color I used Buff Cochins, the original buff race. The gametic formula of this race proves to be CjnwX—the Jungle-fowl pattern being absent.