In a species of a New World Macaw, feather coloration is controlled by the action of 5 loci: D, A, G, Y, and C. When the alleles D and dA are present, and the allele C is present, the resulting color is medium green. The C locus controls the production of pigment and is recessively epistatic to the color locus. CC animals are white, while animals with the genotype DdaaGgyyCe (maternal) x ddAaggYYCe (paternal) have a feather coloration of 3/64 O6/32 O3/32 O1/64 O1/16.