White blackcolumbian + striped saddle-hackle

Color and pattern male

Head: white.

Neck: each feather of the hackle has a medium-wide,  green-glossy black shaft stripe, surrounded by a narrow, silvery-white lace which runs around the feather-tip; front of the neck white.

Back and saddle feathers: upper plumage white, between the shoulders below the neck-hackle black and white; the saddle-feathers with black shaft stripes that extend from the tip of the feather to no more than halfway down the feathers.

Tail: steering-feathers black; support-feathers black with white lacing; sickles and coverts green-glossy black; small-coverts green-glossy black with narrow silver-white lacing.

Wings: bow white, may be partly black; shoulder arch and wing-bar white.

Primary-flights: black with white lace on the outside of the outer-vane.

Secondary-flights: inner-vane black with white lace that runs around the feather tip; outer-vane white so that when the wing is closed it is completely white.

Breast, belly, body and thighs: white.

Down: light blue-gray

Serious faults

Insufficient pattern in the hackles. White in the sickles. Strong presence of black in areas that should be white on the surface, such as the wing-coverts, body and thighs. Broken shaft stripe pattern. Strong yellow tint in the ornamental feathers.

Faults

The above serious faults occur to a lesser extent. Insufficient pattern on the tail support-feathers and wing-flights.

Color and pattern female

Head: white.

Neck: hackle, starting approximately at the transition of the neck and head, has a medium-wide, green-glossy black shaft stripe, completely surrounded by a narrow, silvery-white border; feathers on the front of the neck are white.

Shoulders: white.

Back: white, between the shoulders below the neck-hackle black and white.

Tail: steering feathers black, except for the top two feathers, which are faintly white laced; coverts black with a narrow white lace.

Wings: bow and coverts white. 

Primary-flights: black with a white lace on the outside of the outer-vane.

Secondary-flights: Inner-vane black with a white lace that runs around the feather tip; oute- vane white, so that when the wing is closed it is completely white.

Breast, belly, thighs and rear-part: white.

Down: from white to light blue-gray.

Serious faults

Insufficient pattern in the neck-hackle. Broad and indistinct white lace tail-coverts. Strong presence of black in the areas that should be white on the surface, such as on the wing-coverts, breast and body. Broken shaft stripe pattern.

Faults

The above serious faults occurring to a lesser extent. Insufficient pattern in the tail support-feathers and the wing-flights.

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

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