Blue red-neck  

Color and pattern male 

Head: dark orange-red.

Roof hackle, shoulders, back, and saddle hackle: orange-red.

Tail, primary and secondary flight feathers, front of neck, and chest: bright blue.

Belly, abdomen, and thighs: bright blue.

Down color: gray

Color and pattern female 

Head: red. Neck: red collar; some markings are permitted.

Shoulders, back, saddle, tail, front of neck, and chest: entirely bright blue.

Belly, abdomen, and thighs: bright blue.

Down color: gray.

Serious faults in roosters

Completely white, black, or other colored feathers; partially off-colored feathers in the wings and tail; too dark or rust-colored ground color; too faded or broken color in the red feathers; visible wing triangle.

Serious faults in hens

Completely white, black, or other colored feathers; clear markings, except in the neck ruff.

Faults in roosters and hens

The above serious faults occur to a lesser extent.

 

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

Website with all available information regarding chicken genetics including the chicken color calculator. 

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