Isabelpartridge multiple laced

Color and pattern male

Head: isabel-yellow.

Neck: hackle warm isabelline yellow, each feather with a lavender shaft stripe, running almost parallel to the feather edge; the shaft stripe ends in a point near the end of the feather; shaft lavender; feathers at the front of the neck lavender.

Shoulders: warm isabel-yellow.

Back and saddle: back warm isabel-yellow; saddle-hackle warm isabel- yellow, each feather with a lavender shaft stripe as in the hackle. A slightly deeper shade in the saddle-hackle in the neck-hackle is permitted, but the greatest possible similarity in color depth in both feather groups is desirable; shaft lavender.

Tail: steering-feathers lavender; sickles, by-sickles, and coverts lavender; lesser-coverts lavender, edged with isabel-yellow.

Wings: bow lavender; wing- bar lavender, forming a transverse band when the wing is closed.

Primariy-flights: lavender with an isabel-yellow edge along the outer-vane.

Secondary-flights: lavender with an isabel yellow edge along the outer-vane, forming an isabel yellow wing-triangle; the feather ends lavender.

Breast: lavender, some isabel- yellow pattern permitted.

Belly, lower thighs and rear-part: lavender, some isabel-yellow permitted on the thighs.

Down: light lavender

Serious faults 

White in sickles, tail, and wing feathers. Ground color too light, resulting in a lack of contrast with the lavender feather parts. Absence of shaft stripe pattern on the neck- and saddle-hackle. Lack of molt on the shoulders. Significantly different feather structure in the tail.

Faults

The above faults occur to a lesser extent, in addition the wing-triangle is too light and incompletely colored.

Color and pattern female

Head:  isabel-yellow.

Neck: hackle isabel-yellow, starting approximately at the transition between the head and neck, each feather having a broad lavender shaft stripe (slightly laced with isabel-yellow), running parallel to the feather edge, ending in a point near the feather tip. Front of neck pattern similar to the breast.

Back: grayish isabel-colored, sharply lavender multiple laced, parallel to each other and to the feather outline.

Tail: steering- feathers lavender, both upper feathers lavender with isabel-yellow pattern; coverts and saddle-cushion feathers isabel-colored and pattern like the back feathers.

Wing-coverts: isabel-colored, similar to the back.

Primary-flights: lavender with an isabel-yellow edge on the outer-vane.

Secondary-flights: inner-vane lavender, outer-vane isabel-yellow with lavender lacing stripes, running approximately parallel to the feather outline.

Breast: warm isabel-yellow and pecilled similar to the back; multiple lacing on the breast feathers extend to the throat.

Belly and lower thighs: soft isabella yellow with lavender multiple lacing.

Rear-part: soft isabella yellow. 

Down: light gray.

Serious 

Too weak or incorrect pattern on the back, wing-coverts and breast. Peppered pattern instead of clear pattern. Too light a ground color, resulting in a lack of contrast with the lavender feather parts.

Too weak or incorrect pattern in the feathers of breast, wing-coverts and back. Rust colour on wings. Peppered pattern instead of clear pattern.

Faults

The above 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.