Introducing the Dominant White factor into Vorwerk pattern; it dilutes black areas on a chicken to white.
Red pyle Dutch bantam * Vorwerk bantam
e+/e+,co+/co+,I/i+,s+/s+ * eb/eb,Co/Co,i+/i+,s+/- plus (het?) hackleblack melanizers (Ml, charcoal?)
White patterned Buff Columbian
e+/eb,Co/co+,I/i+,s+/(s+) plus heterozygote (multiple?) hackleblack melanizers
Backcross both males above to mother Vorwerk bantam
Most showed far better white hackle color than their sire.
This is not a typical outcome of a backcross!
The male above is probably Co/Co rendering a red tint on the body.
I suspect that homozygosity of Co (and eb) also improve the hackleblackness.
Male further matured: