Grass Parrots

turquoise parrakeet mutations


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primary mutations

mutations definitions

usual name

sex-linked mutations

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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.


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Opaline: it alters pigment distribution reducing spread of black pigments and enhancing the psittacin pigments without altering structural colour production. Enhanced wing stripe in both sexes, grey down turns into white.


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autosomal recessive mutations:


Fallow: changes all black pigments into brown shades, the eye is dark red, skin and nails are pale. The general  colour looks lighter.


Faded :  Slightly reduces the amount of the black melanin giving a greyish brown appearance. The eye is  dark.


Dilute: Reduces the amount of melanin in feathers but retains dark eyes and nails

Dilute (Yellow)

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Pied: stops the deposition of melanin pigments within feathers in an irregular pattern 


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dominant mutations :


Dark factor : It increases the depth of colour giving a darker appearance. Incomplete dominance (difference between single and double factor ).

Dark green

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Double dark factor (olive) : see above

Olive green

  ol 029ab.jpg

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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comparison between dark green, double dark green and greygreen


Violet factor :  Co-dominant factor which darkens the colour and expresses itself better when combined with the blue factor.

violet factor


mutation + selection:


Red fronted : Strongly depending on selection to produce good specimens, this master gene is dominant to normal , many selection genes are involved in determining the spread of red. Only full red fronted birds must be considered in breeding.

Red fronted

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to see the combinations of mutations

click on the photo above