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
Clearflight Pied budgerigar mutation over half the body area affected, although the clear areas in cocks tend to be larger than those of hens. The Clearflight Pied gene is located on one of the autosomal chromosomes. There is no known linkage of this gene with any other mutation. There is no universally accepted genetic symbol for either the locus or mutant allele, so the symbol "Pc" for 'Pied, clearflight' will be adopted here for the wild-type allele at this locus, and the symbol "Pc" for the Clearflight Pied mutant allele. Both Taylor and Warner and Martin used just "P" for the Clearflight Pied locus,