Color and pattern of the male

Head: dark reddish-brown.

Neck: hackle deep orange-red; each feather has a strong glossy black shaft-stripe, running almost parallel to the feather-outline, ends in a point near the tip; vein black; front of the neck black.

Back and shoulders: dark reddish-brown.

Saddle-hackle: similar to neck-hackle.

Wings: black bow; distinct green-glossy black wing-bar across the wing when closed.

Primary-flights: black, except for the outer-vane, which has a brown edge.

Secondary-flights: inner-vane black, outer-vane dark-brown, forming a dark-brown wing-triangle when the wing is closed.

Breast: green-glossy black.

Belly, thighs and rear-part: black.

Down: greyish.

Serious faults

Far too light color in neck- and saddle-hackle. Far too weak shaft-stripe pattern. Broken shaft-stripe pattern.

Faults

The same deviations, but to a lesser extent. Incomplete colored wing-triangle.

Color and pattern of the female

Head: reddish-brown.

Neck: hackle reddish-orange on top, transitioning to dark-orange towards the bottom with a strong black shaft-stripe, running parallel to the feather-outline, ends in a point near the tip; front of neck salmon-colored.

Shoulders: reddish- brown; a narrow fringe along the feather-outline, against which black peppering is clustered, creating a crescent-shaped, blurred dark pattern; lighter vein contrasts clearly with dark feather-color.

Back, saddle-cushion and tail-coverts: similar to the shoulders.

Tail: steering-feathers black, except the ones on top which are similar to the shoulders.

Wings: bow and wing-coverts similar to the shoulders.

Primary-flights: black.

Secondary-flights: inner-vane black, outer-vane reddish-brown with black peppering.

Breast: deep salmon reddish-brown.

Belly and thighs: slightly less darker then the wing-coverts.

Rear-part: reddish-brown.

Down: reddish-brown, slightly greyish. 

Serious faults

Far too light neck-hackle. Lack of or broken shaft-stripe pattern. Far too light color of the tail-coverts, wing-coverts, shoulder, back,  saddle-cushion and. Far too light breast-color. Lack of the crescent-shaped color cluster. 

Faults

The same deviations, but to a lesser extent.

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