Black shanks and comb in NOT AYAM CEMANI - genetics

AbL

Songster
Apr 18, 2024
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Hello togehter,
I'm not finding any helpful clues to my questions, as they are related du black feet and comb and direct mostly to AYAM CEMANI breed and crossings.

I have Japanese Bantams. Blacks & Blues, my goal is to breed black and blues with black shanks, beaks and combs.
I began with a totally black hen and a blue hen with mostly dark combs (dark mulberry) and in absence of a full black rooster, with a black red combed/yellow shanked rooster.
Bizarre outcome on first round: all 6 female offspring were black or blue, more or less dark combs, black AND yellow colored shanks. Every (2) cockerel was red combed.
Second round, again, female offspring (2) nice dark combs, but rather yellow feet.
Third cross: all black and blue hen x Millfleur rooster: Only cockerels (3), but everyone had nice black feet, but again only red combs.


Is there a hint that comb color is sexlinked? Or just coincidence and my statistically small offspring number being just that, to small?

Next step is to cross the black combed hens with the black feet rooster in the future, and secondly crossing the two black foot rooster to the darkest older hens.
Or find an all black rooster, as my all black hen has accidently wandered of recently and promptly was killed by a predator bird.

In short has anyone insight in black comb/face/feet breeding in not yam cemani or silkie breeds?
 

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