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Predicting Parrotlet Color Mutations
(Double)

Recessive Mutations Demonstrated Using Punnett's Square
Each Parrotlet donates one set of chromosomes expressed with capital letters to demonstrate dominance. Recessive mutations are expressed with lower case letters. In this example "B" = blue so a normal bird not having any blue genes is expressed as "BB". A blue bird is expressed as "bb". A split bird is expressed as "Bb" denoting one blue gene.


Double Mutations
The following examples are valid for working with any two autosomal recessive mutations. These Punnett Squares will apply to any combination of Blue, American Yellow, Pastel (European Yellow), Lutino, or Fallow Parrotlet.

  bY bY
By Bb
Yy
Bb
Yy
By Bb
Yy
Bb
Yy
Blue (bbYY) to Yellow (BByy)

Results:
100% green/split blue & yellow (BbYy) (double split)
 
  BY By bY by
BY BB
YY
BB
Yy
Bb
YY
Bb
Yy
By BB
yY
BB
yy
Bb
yY
Bb
yy
bY bB
YY
bB
Yy
bb
YY
bb
Yy
by bB
yY
bB
yy
bb
yY
bb
yy
Double split (BbYy) (blue & yellow) + double split (BbYy) (Blue & Yellow)

Results:
6.25% normal green (BBYY)
12.5 normal green/split yellow (BByY)
12.5% normal green/split blue (bBYY)
25% normal green/split yellow & blue (BbYy) (double split)
6.25% Yellow (BByy)
12.5% Yellow/split blue (bByy)
6.25% Blue (bbYY)
12.5% Blue/split yellow (bbYy)
6.25% White (bbyy)

 
  by by
bY bb
Yy
bb
Yy
bY bb
Yy
bb
Yy
White (bbyy) + Blue (bbYY)

Results:
100% blue/split yellow (bbYy)

Pairing Tips

We also recommend that you have at least 2 or 3 unrelated Parrotlet pairs for each color that you plan on breeding (Blue, Yellow or Lutino). This allows you to make healthy unrelated pairs from the babies - so your business can grow and profits increase! Also some breeders have had little success when trying to breed only one pair. The sound of the other pairs encourages breeding.







 

 

 

 

 

 

 

Our Parrotlets for sale include: White, Yellow, Blue, Green, Green Rump, Lutino & Albino
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