Yellow Faced Blue Two Yellow Faced ‘Colour

Mutations’ One we shall call ‘Australian’ The other we shall call

‘European’

‘Australian’ Single Factor

‘Australian’ Single Factor Produced by breeding:

Double Factor YLF to Normal – 100%Single Factor YLF to Single Factor YLF – 50%Single Factor YLF to Double Factor YLF – 50%Single Factor YLF to Normal - 50%

Body ColourGreenish to bluish – if there are such words

Not for exhibitionUseful for breeding only

‘Australian’ Double Factor

‘Australian’ Double Factor Produced by breeding:

Double Factor YLF to Single Factor YLF – 50%Single Factor YLF to Single Factor YLF – 25%

Body ColourBlue – depth depends if Sky, Cobalt, Mauve or

Violet. Face and Mask

Buttercup Yellow or Golden For exhibition

‘European’ Single Factor

‘European’ Single Factor

‘European’ Single Factor Produced by breeding:

Double Factor YLF to Normal – 100%Single Factor YLF to Single Factor YLF – 50%Single Factor YLF to Double Factor YLF– 50%Single Factor YLF to Normal - 50%

Body ColourBlue – depth depends if Sky, Cobalt, Mauve or Violet

Face and MaskCream

For exhibition

‘European’ Double Factor

‘European’ Double Factor Produced by breeding:

Double Factor YLF to Single Factor YLF – 50%Single Factor YLF to Single Factor YLF – 25%

Body ColourBlue – depth depends on Sky, Cobalt, Mauve

or Violet Face and Mask

White For exhibition as a Normal

Basis for exhibiting Colour mutations (Colour modifying

mutants) Variety mutations

Colour mutations are….. Blue (normal) ‘European’ Yellow Faced Blue

(normal) Aust. Yellow Face Blue (normal) All are allelomorphs mutated

from the normal wildtype green Represent the 4 budgie colours

Colour modifier mutations are…

Grey Violet Dark factor

Variety mutations are…… Blackeyed self – Dilute included Redeyed self – Albino or Lutino Clearwing Greywing Cinnamon Opaline Fallow Etc etc

Where to exhibit? Green Blue Yellowface Blackeyed self Redeyed self Clearwing Greywing etc etc

Yellow Faced near the top of the exhibition ‘tree’ with the other two Colour mutations

Currently Yellow Faced are misplaced among the Variety mutations in most Countries

What this means……. Puts Yellow Face into its rightful place

based on a solid genetic reason Green, Blue and Yellow Face classes

would contain only normals Every Variety mutation can then be shown

in all three colours rather than just the two coloursGreen, Blue and Yellow Faced Blue

Puts an additional Colour mutation into each class below Yellow Face, creating much more interest in a declining hobby

An example or two……. An Albino is variety mutation and Yellow

Face is a colour mutation thus should we not be exhibiting the variety first

A Fallow (Blue series) is a variety mutation and as explained above, Yellow Face is a colour mutation thus I would conclude that we should be exhibiting the variety (Fallow) and if Yellow Face then so be it.

Conclusion……. ‘Australian’ Yellow Faced Blue can only

be shown in the Double Factor form ‘European’ Yellow Faced Blue can only

be shown as a Yellow Face in the Single Factor form

‘European’ Yellow Faced Blue in Double Factor form visually is ‘Normal’ and can be shown as a Normal