What is this pattern and how can I get it on other birds?

[Party_Chicken]

I have this mutt chick who looks super cool. She has iridescent black feathers with an almost partridge pattern on her back and an almost spangled pattern on her chest. I love her back pattern and I was wondering what it is and how to breed it. I hatched her out from my BSL roo and my polish cross hen.

 

[MysteryChicken]

Her pattern is mixed, but is on partridge base.
She carries the pattern gene, & Melanizer that helps with creating Spangling, & or lacing when combined.

 

[Party_Chicken]

Her pattern is mixed, but is on partridge base.
She carries the pattern gene, & Melanizer that helps with creating Spangling, & or lacing when combined. View attachment 3590498

What parent do you think she got the partridge gene from? That’s the detail I’ve been most curious about.

 

[MysteryChicken]

A Melanized Dark partridge without the Pg/pg+

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[MysteryChicken]

What parent do you think she got the partridge gene from? That’s the detail I’ve been most curious about.

It's recessive, so both parents must carry one gene for it. You won't see the pattern on parents who are split.

 

[Party_Chicken]

It's recessive, so both parents must carry one gene for it. You won't see the pattern on parents who are split.

Ok that’s pretty interesting thanks.

 

[MysteryChicken]

Ok that’s pretty interesting thanks.

You're welcome.