Blue mottled

Note

As the chickens with the mottled color varieties age, the amount of white in the pattern will increase. Two-year-old chickens generally have the best pattern distribution.

Color and pattern male and female

The entire plumage as evenly as possible bright grey-blue with a white sharply defined mottle. The pattern must be as regular as possible.

The wing-flights and tail main-feathers, and in the case of the male also the sickles, are required with a small white end mottle. This white pattern lies at the end of the feather symmetrically in relation to the vein of the feather. The white feather ends vary from a slightly crescent- to diamond-shaped mottle. The pattern should be as regular as possible. The bright grey-blue should predominate. 

Down: blue-grey

Serious faults 

Strong deviation in the pattern due to the presence of too much white or too much blue. Strong irregular distributed pattern. Much red in the plumage and complete bright-blue feathers.

Faults 

Slightly color and pattern deviation. Too much white in the head-feathering. Almost complete white wing-flights or tail main-feathers. Slightly irregular distributed pattern.

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