Silver laced Barnevelders

[mistfall]

Books on chicken color genetics I’ve been reading recommend building laced patterns on a brown or birchen base, depending on whether you want concentric pencilling or single lacing.

Greenfire’s pics of their silver Barnevelder chicks look like wild type. But are they actually brown? https://greenfirefarms.com/barnevelder.html

And the roo has a crow-wing, so that rules out Birchen... what e base are double laced Barnevelders?

 

[BlackHackle]

They are Partridge for e (Extension of black)

 

[mistfall]

But Partridge is not a type of e locus; it is a pattern produced by the action of the Pattern gene (Pg), plus the absence of the Melanotic (ml/ml) Dark Brown (db/db) and Colombian (co/co). Theoretically, it can occur with different e loci, although it wouldn’t be visible on a bird that was E or ER, because of too much black, or on Wheaton because of too little black.

Partridge is normally bred with the e-series genes for brown (eb).
My confusion is because in the photos, the chicks don’t look like brown chicks, they look like wild type (e+) chicks, so I’m wondering if
A. I’m misidentifying the color of the chicks or
B. Barnevelder lacing is on a wild type background.

 

[BlackHackle]

But Partridge is not a type of e locus; it is a pattern produced by the action of the Pattern gene (Pg), plus the absence of the Melanotic (ml/ml) Dark Brown (db/db) and Colombian (co/co). Theoretically, it can occur with different e loci, although it wouldn’t be visible on a bird that was E or ER, because of too much black, or on Wheaton because of too little black.

Partridge is normally bred with the e-series genes for brown (eb).
My confusion is because in the photos, the chicks don’t look like brown chicks, they look like wild type (e+) chicks, so I’m wondering if
A. I’m misidentifying the color of the chicks or
B. Barnevelder lacing is on a wild type background.

I mean't Partridge as in e^b not in pattern. There is an extention of black that is partridge