Blue brassy-back
Color and pattern male
Head and neck: bright-blue , some brown on the hackle allowed; front of the neck similar to the breast.
Back, shoulders and wing-bows: bright-blue with brass mixing.
Saddle-hackle: bright-blue with a blurred brown-yellow feather-edge.
Tail: bright-blue, some white at the base of the main-sickles is allowed.
Primary-flights: bright-blue.
Secondary-flights: bright-blue, some blurry brass marking in the outer-web is allowed.
Breast: bright-blue
Belly, thighs and fluff: bright-blue
Down: grey
Note
Brass-color is under the influence of blue dilution slightly lighter.
Serious faults
Clear visible middle-stripes on head and neck. Marking on the primary-flights. Extensive marking on the outer-web of the secondary-flights.
Faults
Serious faults to a lesser degree. Too yellow or too light ground-color on back and shoulders. Excessive white in the tail. Too dark or uneven blue. Entire or partial black feathers.
Color and pattern female
Head and neck: bright-blue, some brown on the hackle allowed; front of the neck similar to the breast.
Back, wing-coverts and saddle: bright-blue with a brass vein and a cream to blurred brownish feather-edge is permitted.
Tail: bright-blue
Primary-flights: bright-blue
Secondary-flights: preferably entire bright-blue but may show some blurred brown marking on the outer-web.
Breast: creamy to light brown in the center; towards the outside mixed with some bright-blue; shafts are lighter tinted and clearly distinguishable.
Belly, thighs and fluff: cream to light-brown with some bright-blue mixing.
Down: grey
Note
Brass-color is under the influence of blue dilution slightly lighter.
Serious faults
Clear visible middle-stripes on head and neck. A clear sharp feather-edge on back, saddle and wing-coverts. Extensive marking on the secondary-flights. Marking on the primary-flights.
Faults
Serious faults to a lesser degree. Complete absence of the brass shaft on back, wing-coverts and saddle. Too dark or uneven blue. Entire or partial black feathers.
Feather details from: http://www.kippenencyclopedie.nl
Website from Johan Albada with more than
5000 photos of chicken-breeds, 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
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