Color and pattern of the male

Plumage: basicly similar to goldpartridge, but all black, orange, carmine and brown feather-areas are regularly crosswise patterned by V-shaped, less sharply defined, lighter-colored barring. 

Neck- and saddle-hackle:  each feather with a barred shaft-stripe, the sharpness of the pattern and intensity are not high requirements, the shaft-stripe runs parallel to the feather-outline, ends in a point near the tip.; the saddle-hackle has more or less distinct shaft-stripe pattern, lack of pattern is not considered a fault.

Back, shoulder-arch and wing-triangle: some cuckoo-pattern can be observed.

The barred pattern can be present in both pure-bred and impure-bred males, which are allowed:

> Pure-bred male: the lighter barring is bright greyish-white and clearly wider than the dark-grey barring; the overall appearance is light.

> Impure-bred male: the lighter barrimg is greyish-white and clearly narrower than the dark-grey barring; the overall appearance is similar to the  female.

Serious faults 

>Pure-bred male: sickles and/or steering-feathers mostly white; complete off-color feathers.

> Impure-bred male: white in the tail and/or wings; too few cuckoo pattern in the wings, tail and breast; complete off-color feathers;

In addition, for both males: excessive brown in the breast, belly and thighs; straw-colored in the lower part of the neck-hackle.

Faults

The above serious faults are less common. Too light ground-color on the neck. Incomplete colored wing-triangle.

Color and pattern of the female

Plumage: basicly similar to goldpartridge, but all black, orange, carmine and brown feather-areas are regularly crosswise patterned by V-shaped, less sharply defined, lighter-colored barring. 

Neck: each hackle feather with a barred shaft-stripe; the sharpness of the pattern and the intensity are not high requirements; the shaft-stripe runs parallel to the feather-contour, ends in a point near the tip.

Back, wing-coverts, saddle and tail-coverts:  grayish-brown with black peppering, interrupted several times transversely by barring that is lighter than the ground-color and do not show peppering in those areas.

Primary-flights: blackish-brown and interspersed transversely with slightly lighter barring, smooth transition between lighter and darker barring.

Secondary-flights: outer-vane brownish-grey with black peppering, interspersed several times transversely with lighter clouding and showing no peppering in any area, the lighter and darker barring merge smoothly into each other; inner-vane blackish-brown and interspersed transversely with slightly lighter barring, smooth transition between lighter and darker barring.

Tail: steering-feathers blackish-brown and transversely interrupted with slightly lighter barring, smooth transition between lighter and darker barring.

Breast: as evenly salmon-colored as possible.

Serious faults

Complete lack of cuckoo pattern on the neck-hackle. Lack of peppering on the shoulders. Too light veining. Very coarse or clumped peppering. Prominent cuckoo-pattern on the breast. Too pale breast-color. Too little cuckoo-pattern on the tail and wings. Excessively contrasting cuckoo-pattern on ​​the back, shoulder-arch, wing-coverts, saddle and tail-coverts. Complete white feathers in wing-flights young chickens.

Faults 

The above serious faults occur less frequently. Too light ground-color on the neck-hackle.

Feather details from:  http://www.kippenencyclopedie.nl

Website from Johan Albada with more than

             5000 photos of chickens, chicken color varieties and feathers.              

Genetic code: https://kippenjungle.nl/Overzicht.htm

Website from Henk Meijers with all available information regarding

chicken genetics including the world famous 

Chicken Color Calculator