English Chocolate Orpingtons and a Dun Gene?

[ColtHandorf]

Oh and here I was thinking they were common. XD

I think Dun is only in Sumatras and possibly Seramas at the moment? I could be wrong on that though.

 

[ZooPro]

What color are the adults shanks/feet? It looks like the hen has slate and the male has white?

I'll have to look when I get home. What color are their feet supposed to be?

 

[Amer]

I think Dun is only in Sumatras and possibly Seramas at the moment? I could be wrong on that though.

You’re probably right. I’ve seen dun Orp pics online but didn’t pay attention to where they were from. I don’t get dun Sumatras. Sexlinked chocolate just show sheen better which I think is a Sumatra trait. ***there are white crested dun Polish

 

[Lucy Brown]

View attachment 2673907

I know this is a little off topic but the rooster and hen are gorgeous

 

[ColtHandorf]

What color are their feet supposed to be?

Well they aren't an accepted variety here or in the UK (I don't think). So there isn't an SOP to go off of. That being said, I believe they are supposed to be dark. They are more of a brown than a slate or white. I assume that has to do with the chocolate gene. THeir beaks are the same color. They might have a bit of horn-colored towards the base.

 

[RoostersAreAwesome]

I think Dun is only in Sumatras and possibly Seramas at the moment? I could be wrong on that though.

You’re probably right. I’ve seen dun Orp pics online but didn’t pay attention to where they were from. I don’t get dun Sumatras. Sexlinked chocolate just show sheen better which I think is a Sumatra trait. ***there are white crested dun Polish

Dun is also in OEGBs (fawn silver duckwing) and phoenixes. I expect it would be easier to add dun to Sumatras than chocolate.

 

[The Moonshiner]

@The Moonshiner and @nicalandia have worked with dun I think.

I haven't worked with dun.
It's not a common gene here.
I agree there's no dun gene in Orpingtons in the states.

 

[nicalandia]

Yeah, it sounds like your birds are dun as opposed to sex-linked chocolate.
Dun is incompletely dominant just like blue meaning the heterozygotes (dun) have a color in between the homozygote colors (black and khaki.)
Your birds are dun: I^di+ and I^di+
That means the offspring will be I^dI^d, I^di+, and i+i+.
25 percent black, 50 percent dun, 25 percent khaki respectively.

Can we Please follow correct nomenclature? https://www.backyardchickens.com/threads/chicken-gene-mutation-nomencalture.1464208/

 

[Amer]

Can we Please follow correct nomenclature? https://www.backyardchickens.com/threads/chicken-gene-mutation-nomencalture.1464208/

I’m sorry, I thought I was:

or is this about the backslashes? If it makes you feel better I can add them. I just find it easier to skip them on an IPhone.

 

[ZooPro]

So my new question is if this is in my chocolates, what will their offspring produce? I understand the light chicks will probably reproduce this gene readily, but what about the darkest chicks and medium chicks?