I have a fascination for any Pied mutation, in any species, I have however centered my efforts on breeding Pied A roseicollis. There are two Pied Mutations, namely Recessive Pied and Dominant Pied

Dominant Pied
In this mutation there is a partial absence of eumelanin, randomly distributed accross the body of the bird, resulting in unpigmented patches across the plumage.  Dominant Pieds were first reported in the US of A in the early 1930s, but only established in the 1960s, at the time when the first detailed description was published.

The extent of “Piedness” varies from bird to bird, it can vary from an almost complete loss of eumelanin, to just one pied feather. The mask is smaller than normal in this mutation.

It is hard to tell the difference, if any, between single and double factor birds.

Combinations with other mutations:

Dark Green Pied, Double Factor Dark Green
Turquoise Pied, Dark Turquoise Pied, Double Factor Dark Turquoise Pied
Violet Turquoise Pied, Double Factor Violet Turquoise Pied
Aqua Pied, Dark Aqua Pied, Double Factor Dark Aqua Pied
Violet Aqua Pied, Double Factor Violet Aqua Pied
Edged Dilute Pied
Orange face Pied
Pallid Pied and combinations of the other mutations

Violet Turquoise Pied

Turquoise Violet Pied