Australian Pied budgerigar mutation spot, clear areas on the wings and a clear area on the breast. They differ from the Clearflight Pied in the nape spot, which is not always present, and in their feet, which are usually pink. But the main point of difference is in the clear area of the body, which in the Australian Pied is located in the middle or lower breast, with the upper breast being always normally coloured, so that there is a clear division between the mask and the breast, just as in normal birds. In the Clearflight Pied the clear area on the breast, if
Recessive Pied budgerigar mutation in appearance to the wild-type Light Green. That is, the presence of a single wild-type allele is sufficient to permit the full production and normal distribution of the black melanin pigment. Among the budgerigar fancy such a bird is said to be a Light Green split recessive pied, usually written Light Green/recessive pied. In a bird which has two Recessive Pied alleles (the homozygote, "r / r" ), the lack of the wild-type allele means that normal black melanin pigment is suppressed in random areas over the body. The factors governing the distribution of the residual pigmentation are not known.