the black cheek mutation is recessive and the black face mutation is dominant,
the result does not interest us (100% bf/bc),
With black breast (recessive) the result is 100% grey/bb,bc
the gray is better because leaves no trace of other mutations, 100% gray/bc
but the best is bc X split, 50% bc and 50% gray/bc
anyway in Europe, breed purity X purity but chicks are becoming smaller....
else if you noticed, my black cheek, has the side brown, is a defect to the competition
have to have black too
Sorry for my english
