Simple Genetics Calculator

A practical planning guide for Heritage Clearwing pairings. Choose a common project bird such as Seafoam, Violet/Mauve, Rainbow or Greywing, or enter the visible traits and known splits manually, then press calculate. The expanded results explain not only the percentages, but also what each result means, how sex-linked traits work, and what to record in the aviary.

Important: The project-bird presets are starting points only. After selecting Seafoam, Violet/Mauve, Rainbow, Red Violet, Amethyst or Greywing, adjust the fields if your bird is different. Opaline and Cinnamon are sex-linked. Hen chicks receive their single Z chromosome from the cock bird. This calculator keeps that rule separate from the autosomal traits.

Cock Bird Common project bird

Choose a common project bird to pre-fill the fields, then adjust any known splits or differences below.

Base colour / dark factor Violet factor Clearwing Whitecap / Yellowface Cinnamon Opaline Fallow Dilute

Hen Bird Common project bird

Choose a common project bird to pre-fill the fields, then adjust any known splits or differences below.

Base colour / dark factor Violet factor Clearwing Whitecap / Yellowface Cinnamon Opaline Fallow Dilute

Expected Results

Choose the parent traits above and press Calculate Pairing. The result will include percentages, plain-English explanations, breeder notes, and record-keeping reminders.

How to use this calculator

Use known facts only

Select Unknown when you are not sure. A hidden split can completely change nest results.

Track every chick

Use the result as a planning guide, then compare it against your clutch records and leg-band notes.

Check sex-linked traits carefully

For Opaline and Cinnamon, daughters can only show the trait when the cock bird passes it to them.

Use presets as shortcuts

The Seafoam, Violet/Mauve, Rainbow, Red Violet, Amethyst and Greywing presets fill the main fields quickly, but you should still adjust splits and unknowns to match your own bird.