The Black is a very old variety, possibly the first variety to be developed. Probably some of the original turkeys taken to Europe were black. The Black turkey was very popular all across Europe, but especially in Spain. The Black Turkey was admitted to the APA Standard in 1874. Standard weights are 33 lbs. for old toms and 18 lbs. for old hens.
The genotype for black is simply BB.
This mutant gene (B) causes black throughout all the feathers. It is located at the bronze locus and is a dominant allele to both (b) bronze and (b') black winged bronze.