All known budgerigar mutations — sex-linked, autosomal recessive, dominant, and dark factor genes. Results are split by male and female offspring with accurate probabilities.
🔵 Sex-linked (Z-linked): Males (ZZ) need 2 copies to show the mutation. Females (ZW) need only 1 copy and cannot be split/het for sex-linked genes.
🔴 Autosomal recessive: Click once for Het/Split · twice for Visual. Both sexes follow identical inheritance rules.
⚫ Dark Factor stacks: 0 copies = Light Green / Skyblue · 1 copy = Dark Green / Cobalt · 2 copies = Olive / Mauve. Dark Factor interacts with the Blue mutation to change the base colour name.
⚠️ Note: Budgerigar genetics are complex — particularly colour interactions (Lutino + Blue = Albino, Dark Factor naming, etc.). This calculator covers known published genetics but accuracy on rare combinations is not guaranteed. Always verify with experienced budgerigar breeders.
🧮 Genetics Calculator
Parent A
Parent B
Offspring Outcomes
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Select mutations for both parents then click Calculate
