Heritage Clearwing Knowledge Base
A quick reference guide for Heritage Clearwings, Whitecaps, Seafoams, Rainbows and the Violet family. Use this page to look up what a variety is, how it is inherited, and how it is described on this site. Links to deeper reference pages are included throughout.
The Varieties — What Are They?
What is a Heritage Clearwing?
A Heritage Clearwing is a budgerigar that shows strong, rich body colour combined with clean pale or white wings. The key feature is the contrast between deep body colour and clear wings — Heritage Clearwings should look vivid and well-defined, not washed out.
Heritage Clearwings are distinct from modern Greywings. Greywings have paler, greyer body colour and grey (not white) wing markings. A good Heritage Clearwing should not be confused with a Greywing. See the Clearwing vs Greywing vs Dilute comparison page for a detailed breakdown.
Heritage Clearwing vs Greywing vs Dilute
These three varieties are closely related and can be confused, especially in poor photos or when birds are going through moult. The key differences are body colour strength and wing colour depth.
Clearwings should have near-full body colour and very pale or white wings. Greywings have about half body colour and grey wings. Dilutes have greatly reduced body colour and very pale wings, often appearing washed out across the whole bird. The comparison page gives a full visual breakdown with trait tables.
What is a Whitecap?
Whitecap is the name used in this program for birds showing white or near-white face and mask influence from the Yellowface gene family. Unlike a standard Yellow-faced budgerigar where yellow is visible in the face, a Whitecap bird shows a white or very pale cream face.
Whitecap is tracked as a project trait in the Heritage Clearwing program, particularly in the Seafoam Clearwing and Violet Whitecap lines. SF (single factor) and DF (double factor) status affects how strongly the Whitecap character is expressed. See the Mutation Library for inheritance details.
What is a Seafoam?
Seafoam birds in this program are Whitecap/Yellowface-family birds that show a soft blue-green or aqua appearance — the result of Yellowface-type influence interacting with the blue-series base and Clearwing wing expression. The body colour has a soft greenish-blue cast, and the face often shows pale yellow or cream tones rather than pure white.
Seafoam and Whitecap are closely related appearances within the same gene family. Whether a bird reads as Seafoam or Whitecap depends largely on the base colour, the strength of the Yellowface/Whitecap factor, and the dark factor of the individual bird.
What is an Amethyst Clearwing?
In this program, Amethyst Clearwing refers to a Cinnamon Double Factor (DF) Violet Clearwing. The Cinnamon gene adds a distinctive warm, brownish-rose tone to the body colour and changes the eye colour from dark to plum-red. Combined with DF Violet on an appropriate base, the result is the rich warm violet-mauve appearance associated with the Amethyst Clearwing name.
Amethyst is a project name, not a single gene. It should always be recorded by its components: base colour, Cinnamon status, Violet factor, and Clearwing quality. See the Genetics Centre for full recording guidance.
What is a Red Violet Clearwing?
Red Violet is used in this program for vivid Violet Cobalt-style Clearwings — birds where the Violet factor sitting on a Cobalt (one dark factor) base produces a saturated, rich violet-red body colour. The Red Violet appearance is particularly striking when combined with clean Heritage Clearwing wing expression.
The difference between a Red Violet and a standard Violet Clearwing often comes down to base colour: Violet on Cobalt looks warmer and richer than Violet on Sky Blue. Tracking dark factor carefully in the Red Violet line is essential.
What is a Violet Rainbow?
A Rainbow budgerigar combines four elements: a Blue-series base colour, Yellowface or Whitecap face influence, Opaline feather patterning, and Clearwing or Greywing-family wing expression. A Violet Rainbow adds the Violet factor to this combination, giving the body colour extra depth and richness.
Rainbow is a combination project name, not a single gene. Each element must be recorded separately. See the Mutation Library for more on how Rainbow inheritance works and what to track.
Single Factor vs Double Factor Violet
Violet is a dominant gene, but the number of copies a bird carries matters. A Single Factor (SF) Violet bird carries one copy of the Violet gene. A Double Factor (DF) Violet bird carries two. In some base colours, SF and DF Violet look different enough to tell apart visually; in others, they are very difficult to distinguish without breeding results.
SF Violet on Cobalt produces the classic Red Violet appearance. DF Violet on Cobalt can look even more intensely violet. On Mauve (double dark factor), the Violet factor can produce very deep, rich tones. Confirming SF vs DF requires careful breeding records across multiple clutches — visual guessing alone is not reliable.
What does Dark Factor mean?
Dark Factor (DF) refers to the number of "dark" genes a blue-series budgerigar carries, controlling how deep the base colour is. No dark factor gives Sky Blue. One dark factor gives Cobalt. Two dark factors give Mauve. The same progression applies in the green series: Light Green, Dark Green, Olive.
Dark factor strongly affects how Violet factor and other modifiers appear on a bird. A Violet on Sky Blue looks quite different to a Violet on Cobalt or Mauve. Recording dark factor carefully is one of the most important parts of Heritage Clearwing genetics work.
What is a Fallow?
Fallow is a recessive mutation that affects body colour (making it more washed-out and warm), softens the wing markings, and most distinctively changes the eye colour to red or plum. For a chick to be a visual Fallow, both parents must carry the Fallow gene — either visually or as proven splits.
Fallow is tracked as a project trait at Park Ridge, particularly in the Seafoam Clearwing line. A Fallow chick appearing unexpectedly is always a useful result, as it confirms that both parents carry the gene as splits. Records must be updated when this happens.
What does Opaline mean?
Opaline is a sex-linked mutation that changes the feather pattern distribution. In an Opaline bird, body colour bleeds into the wing feathers in a characteristic saddle pattern across the back and wings. This gives Opaline birds their distinctive look — partly coloured wings rather than clean pale wings.
Opaline is sex-linked, meaning cocks can be visual Opaline or split for Opaline, while hens are either visual Opaline or not — they cannot be split. Opaline is used in Rainbow and some Amethyst combinations in this program.
What does Cinnamon mean in budgerigars?
Cinnamon is a sex-linked mutation that affects melanin production, giving the body feathers a warm brownish tone and changing the eye colour from dark to plum-red (similar to Fallow but with less body colour reduction). Cinnamon on a Violet base produces the Amethyst Clearwing appearance that is central to this program.
Like Opaline, Cinnamon is sex-linked. Cocks can be visual Cinnamon or split for Cinnamon. Hens are visual Cinnamon or not — hens cannot carry Cinnamon as a hidden split. This is one of the most important inheritance rules to understand in the Amethyst Clearwing project.