The Brahma book, Genetics of chicken colours the basics, Silkie book
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The Brahma book, Genetics of Chicken Colours & Extremes, Silkies and Silkie bantams
Top: Red silver wheaten with bronze tail and breast lacing.
Expressing one dose of the only existing so ‘recessive’ mottling. Aren’t  there more mottling genes?

Bottom: incomplete melanized eb golden bird pure for mottling. Due to mottling clean yellowlegs.
In Genetics of the Chicken Extremes the dark face of the above Tomaru rooster is discussed.