Black silver-neck

Color and pattern male

Head: silvery white.

Neck- and saddle-hackle: silvery white, each feather with a green-glossy black shaft stripe, running parallel to the feather edge; the shaft stripe ends in a point near the end of the feather; shaft black.

Back and shoulders: silvery white

Tail, wings, front of neck, and breast: completely glossy green black.

Belly, thighs and fluff: black.

Down: grayish black.

Color and pattern female

Head: silvery white

Neck-hackle: silvery white, each feather with a broad glossy green black shaft stripe, running parallel to the feather edge and ending in a point near the end of the feather.

Back, saddle, tail, wings, front of neck and breast: glossy green black.

Belly, thighs, and fluff: black.

Down: grayish black.

Serious faults male and female

Yellow tinge and insufficient shaft stripe pattern in the male's neck- and saddle-hackle and in the neck-hackle female.

Faults in roosters and

The above serious faults occur to a lesser extend. Insufficient sheen in the black.

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

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