Pigeon Genetics Calculator

How to use this calculator

This tool calculates the expected offspring phenotypes and carrier splits from a sire (male) and dam (female) pairing.

Select alleles for the sire and dam. Z-linked loci behave differently in males and females.
Results are shown separately for male and female offspring.
Some named colours (e.g. Almond, Dunn, Andalusian) are inferred automatically from the expressed phenotype.
Enable “Show carriers (splits)” to see hidden recessive alleles.
This is a probability calculator — results reflect expected ratios, not guaranteed outcomes.

Sire (Male, ZZ)

Basic genetics

B allele 1 (Z)
B allele 2 (Z)

C allele 1
C allele 2

D allele 1 (Z)
D allele 2 (Z)

Spread allele 1
Spread allele 2

Grizzle allele 1
Grizzle allele 2

e-locus (recessive red) allele 1
e-locus (recessive red) allele 2

Common modifiers

Indigo allele 1
Indigo allele 2

Dominant opal allele 1
Dominant opal allele 2

Recessive opal allele 1
Recessive opal allele 2

r-locus allele 1 (Z)
r-locus allele 2 (Z)

St allele 1 (Z)
St allele 2 (Z)

More traits and modifiers

Baldhead allele 1
Baldhead allele 2

Kite allele 1
Kite allele 2

Peak crest allele 1
Peak crest allele 2

Eye colour allele 1
Eye colour allele 2

z-locus allele 1
z-locus allele 2

Dam (Female, ZW)