Nestling Attributes / Home Page / Selective Breeding / Colony Breeding / Hybridization / Excess Birds / Primary Mutations / Combination Mutations /



Without getting into any lengthy genetic explanation, suffice to say that some color mutant nestlings (chicks) can be identified after they exit the egg.  The simple explanation for this, as I understand it, is that there are many factors that impact feather color, but only two factors in particular that impact a bird's ground color and  appearance: 1) the presence of a color mutant gene, and whether that gene is in a heterozygous or homozygous condition, and 2) the relative concentration of psittacin (a carotenoid like pigment creating yellow, pink and similar colors) and melanin (a black pigment that shifts towards brown and gray its pathways are interrupted) in the various structures of the feather, beak, feet, etc....

Chicks can be identified by the color of their:

feet and toenails grey; black; pied or flesh
eyes black; red or plum
skin pink / flesh; 
natal or primary down orange; yellow; white etc...
secondary down white; grey or other
beak  horn; ochre; two toned etc...
flights white; grey; pied; yellow; tan; brown
rumps white; blue; jade / cobalt; mauve / slate; violet
Size can also play a role

Knowing the parental phenotype and genotype would obviously be of great assistance in determining the probabilities of certain offspring in the nest.  However, if that is not available, as is true in so many pet purchase cases, visual and physical characteristics of your nestlings can help in narrowing down what the parents are (were) and what the offspring are likely to be.

As information regarding nestlings begins to flow in, the attached nestling attribute table will be filled in, and this page will begin to house more information on specific mutations and nestlings.

Please help by: e-mailing information on your mutation or color combination, and the color of their chicks (unless it is posted already):