Recessive Pied in the Turquoise Parakeet

What is Recessive Pied?

Recessive Pied is logged in this calculator's reference data as an autosomal recessive melanin mutation producing symmetrical patches of clear feathering. Pied mutations are common across parrot species, and the recessive form in particular tends to produce irregular, variable patches — no two Recessive Pied birds look quite the same — as opposed to the more uniform, progressive patterning seen in some dominant pied mutations.

How it works, in plain terms

Pied mutations disrupt pigment cell migration during feather development in specific, but randomly varying, patches of skin — areas the pigment cells never reach grow in as clear or white feathers, while the rest of the plumage develops normally. Because the exact patches depend on where pigment cells happened not to migrate during development rather than a fixed genetic blueprint, the size, shape, and location of the clear areas differs from bird to bird, even between siblings with the same genotype. Symmetry between the left and right side of the body is common, since both sides develop under similar conditions in the embryo.

Autosomal recessive inheritance, explained

Recessive Pied sits on an ordinary autosome, so cocks and hens inherit and can carry it identically. As a recessive trait, it takes two copies to show:

• One copy (split) — the bird looks completely normal but can pass the mutation to offspring.
• Two copies (visual) — the bird shows clear, unpigmented patches.

Genotype → phenotype