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mutations definitions |
usual name |
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sex-linked mutations |
click on each photo to enlarge it |
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Cinnamon: prevents the total oxydation of brown pigment into black pigment without reduction of the amount of pigment. The eye is red and quickly darkens with age. Only in Australia |
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autosomal recessive mutations |
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Lutino: inability to produce melanin pigment, blue parts turn into white, skin, nails and beak are pink, the eye is red. |
Lutino |
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Bronze Fallow: changes all black pigment into brown shades, the eye is dark red, skin and nails are pale. The general colour looks lighter, but there are several degrees of reduction, which probably represent different mutations, giving different phenotypes for some species . |
Bronze Fallow
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Pastel : reduced amount of black pigments in feathers but not in skin or nails, the eye remains black and nails are normal. (The melanin seems reduced in edging the feathers, it could be an edged dilute but that is still under investigation). |
(Grey wings)
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Faded : slight reduction of melanin in all areas, not very different from the wild type. |
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dominant mutations |
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Greygreen: prevents all structural colours, producing a grey effect, there is no difference between the single and double factors. |
Grey green
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Pied: stops the deposition of melanin pigments within feathers in an irregular pattern |
Pied |
