Predicted clutch
See the possible outcomes of a pairing, split into cocks and hens where the sexes differ, with the percentage behind each result. The free calculator draws the Punnett square too.
Mendelian inheritance, worked out for you
Genetics & COI
Plan better pairings. Predict outcomes. Reduce inbreeding.
- Calculate COI instantly for any pairing
- Predict possible offspring and mutation chances
- Outcomes shown separately for cocks and hens
- Add your own mutations when the catalogue lacks one
- Keep your aviary healthier for generations
Mutation percentages
Splits and visual mutations worked out for you, including the ones easy to lose track of across generations. Mutations of the same gene, such as greywing and dilute in the budgerigar, are worked out as one series.
Pedigrees and COI
Inbreeding coefficients calculated from the pedigree your own records already describe, before you set the pair.
Worked example
A lutino cock over a normal hen.
Lutino is sex-linked in the cockatiel, so the sexes come out differently: every daughter is visually lutino, every son is a normal split lutino. Sons carry it invisibly, which is how a mutation disappears from an aviary for a generation and then reappears.
AviLedger runs this for the six curated cockatiel loci, and the equivalent panels for budgerigars (an expanded, cited set), lovebirds, ringnecks and the Pyrrhura conures.
Run it yourself, freeSire / Dam
Z+ (normal)
W
Zino
Normal /InoSon · split, 50%
LutinoDaughter · visual, 50%
Zino
Normal /InoSon · split, 50%
LutinoDaughter · visual, 50%
Nymphicus hollandicus · lutino / ino, sex-linked recessive · 19-day incubation
Powerful tools. Accurate results.
AviLedger's genetics engine helps you make confident breeding decisions with clear, easy-to-understand results, so a pairing is a plan rather than a guess.
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Plan next season's pairings before you make them.
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