Stumbled Across a Sex Link cross!

[Brahma Chicken5000]

Title says it all! Now for some back story:
My Sebright x Old English Game Bantam pullet went broody so I bought 6 eggs for her to hatch out. The only possible sires of these chicks are a single comb large fowl White Silkie cock and a single comb large fowl Blue Silkie cock. The mothers of these 6 chicks are an Easter Egger, a Silver Laced Wyandotte, a Novagen (Red Sex Link), and an Australorp or Rhode Island Red.
Now when the White Silkie x Novagen chicks both hatched out one had lighter down than the other one. Both Novagen crosses are now 4 weeks old and easy to identify as cockerel and pullet.

I would like to thank @nicalandia @Gray Farms @JedJackson & @KikisGirls for their help.

 

[JedJackson]

Title says it all! Now for some back story:
My Sebright x Old English Game Bantam pullet went broody so I bought 6 eggs for her to hatch out. The only possible sires of these chicks are a single comb large fowl White Silkie cock and a single comb large fowl Blue Silkie cock. The mothers of these 6 chicks are an Easter Egger, a Silver Laced Wyandotte, a Novagen (Red Sex Link), and an Australorp or Rhode Island Red.
Now when the White Silkie x Novagen chicks both hatched out one had lighter down than the other one. Both Novagen crosses are now 4 weeks old and easy to identify as cockerel and pullet.
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I would like to thank @nicalandia @Gray Farms @JedJackson & @KikisGirls for their help.

Neato! I wonder what the genetic explanation is for this particular cross of sex links? Is it a gold/silver allele thing or something else?

 

[Brahma Chicken5000]

Neato! I wonder what the genetic explanation is for this particular cross of sex links? Is it a gold/silver allele thing or something else?

I would like to know as well. Maybe @nicalandia or @The Moonshiner will know.

 

[Brahma Chicken5000]

This is what @nicalandia told me about the sex links:

 

[The Moonshiner]

How do you know they're sex linked?
When your breeding mixes a lot of possibilities can be produced. How do you know these aren't just two of the possibilities that happen to be one of each gender?

 

[nicalandia]

How do you know they're sex linked?
When your breeding mixes a lot of possibilities can be produced. How do you know these aren't just two of the possibilities that happen to be one of each gender?

They are sex linked for sure... At least at the sex linked dermal inhibitor allele(id+ for wild type and Id for dominant inhibitor), as Silkies are id+ and production red hybrids are Id, id+ rooster over Id hen will yield id+ pullets and Id/id+ cockerels

 

[Brahma Chicken5000]

How do you know they're sex linked?
When your breeding mixes a lot of possibilities can be produced. How do you know these aren't just two of the possibilities that happen to be one of each gender?

The chicks down was chipmunk stripes and one was lighter than the other.

 

[Brahma Chicken5000]

The 2 chicks in question. They were the only ones with yellow on their heads

 

[The Moonshiner]

I think its a random coincident.
I think they both just hatched with wild type down but its not sex linked. Other genes just made them different.
Usually with the sex links that go by the chipmunk stripes are using the barred gene to lighten the males. Its the auto sexing breeds that really make that difference.
The other thing is gold vs silver on the wild type.
I don't see barring or silver in the chicks so they don't seem to be sex linked in the way I think you're thinking.

 

[Amer]

Title says it all! Now for some back story:
My Sebright x Old English Game Bantam pullet went broody so I bought 6 eggs for her to hatch out. The only possible sires of these chicks are a single comb large fowl White Silkie cock and a single comb large fowl Blue Silkie cock. The mothers of these 6 chicks are an Easter Egger, a Silver Laced Wyandotte, a Novagen (Red Sex Link), and an Australorp or Rhode Island Red.
Now when the White Silkie x Novagen chicks both hatched out one had lighter down than the other one. Both Novagen crosses are now 4 weeks old and easy to identify as cockerel and pullet.
View attachment 1495762 View attachment 1495763 View attachment 1495764 View attachment 1495765
I would like to thank @nicalandia @Gray Farms @JedJackson & @KikisGirls for their help.

I'm most curious on... how did you get largefowl Silkies? Crossbreeding? Buying one? Really poor extra large "bantam" Silkie?