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The science of budgerigar color genetics deals with the heredity of mutations which cause color variation in the feathers of the species known scientifically as Melopsittacus undulatus. Birds of this species are commonly known by the terms 'budgerigar', or informally just 'budgie'.
When combined with the Dark mutation the body colour of both Greys and Grey-Greens becomes slightly darker, but the effect is much smaller than the effect of the Dark mutation on Light Greens and Skyblues. As this is a dominant mutation the colour changes described above apply to both single factor (SF) and double factor (DF) Greys and Grey-Greens.
The Recessive Pied budgerigar mutation is one of approximately 30 mutations affecting the colour of budgerigars. It is the underlying mutation of the Danish Pied variety, aka Harlequin. It is believed by Inte Onsman of MUTAVI [1] to be the same mutation as the Anti-dimorphic Pied (ADM Pied) found in some parrots. [2]
In an attempt to regularise the names of mutations across all psittacines, it has been proposed by Inte Onsman [1] that the name Pale Fallow be adopted for this mutation. The name Dun Fallow has also been proposed, and Terry Martin suggests [2] Beige Fallow or Grey-Brown Fallow. But in Budgerigar circles the variety is commonly known as the ...
The Violet mutation has an incompletely dominant relationship to its wild-type allele. That is, there are three distinct phenotypes , possessing zero (the wild type), one (the single factor heterozygote ) and two (the double factor homozygote ) Violet alleles, with the heterozygote having an intermediate appearance between the wild-type and the ...
But the Dark mutation was not seen in the domesticated budgerigar until the summer of 1915 when a Dark Green was observed by Monsieur A Blanchard in his aviaries in Toulouse. [3] [4] At the time, Toulouse was the main commercial centre for budgerigar distribution in Europe, handling thousands of imported and aviary-bred birds each year. The ...
Because the Ino mutation totally inhibits the production of normal melanin pigment it prevents the visible expression of all the other mutations which depend on the presence of melanin to show their effect. This is called epistasis, and Ino is phenotypically epistatic over many other mutations, including Dark, Grey, Opaline, and the Dilute series.
The Clearwing budgerigar mutation is one of approximately 30 mutations affecting the colour of budgerigars. It is the underlying mutation of the Clearwing variety, often known as Yellowwings in the green series and Whitewings in the blue series. When combined with the Greywing mutation the variety is known as the Full-bodied Greywing.