Dun vs SL Chocolate Orp Roos

[Kytera]

Trying to figure out if these guys are dun or SL chocolate. They looked like SL chicks but some were very light colored. I got the hatching eggs from a local hobby breeder before knowing about Dun vs SL. She does not know what they are. I have 1 pullet and 3 Roos. I initially put the one that was most clearly a Roo early on and seemed sweet in with the girls and the others into a bachelor flock. He is definitely the bigger of the 3, and honestly a bit of a jerk. He is incredibly rough with the girls too. I also have a 2 white (cream?) color pullets that hatched from her "mixed orp pen." They arent a bright white but a dirty white pale cream. Not sure if they are recessive white or thrown from Dun - were both super pale yellow chicks.
If they are in fact Dun, I would love to play with breeding for Khaki. Each one has slightly different coloring, with 2 having more red-brown (mahogany, right?). #3 is darker chocolate, but scrawnier and has funky toes. Basically including him just for color reference.
I have tried researching but I dont think I understand enough of the genetics yet. My pullets are chocolate from the same hatch, pure buff orp, a blue/buff mix orp, RIR, speckled sussex, OE, and the 2 white/cream. I am thinking that if I hatch the chocolate orp (and white/cream orp?) eggs, I should be able to tell if they are SL or not - right?
Attaching a few pics of the boys now and as chicks, and the white one.

 

[Debbie292d]

Orps are similar to silkies when it comes to breeding for color, which is what I'm used to. There is no way I've seen to tell the Dun chocolates from the SL chocolates. Breeding them to something else might give a clue though. Someone may have a way for telling them apart, but I surely can't.

I would think the seller could tell you what was in the pen, unless she's got a modge podge of colors and pens.

 

[Kytera]

Orps are similar to silkies when it comes to breeding for color, which is what I'm used to. There is no way I've seen to tell the Dun chocolates from the SL chocolates. Breeding them to something else might give a clue though. Someone may have a way for telling them apart, but I surely can't.

I would think the seller could tell you what was in the pen, unless she's got a modge podge of colors and pens.
Orps are similar to silkies when it comes to breeding for color, which is what I'm used to. There is no way I've seen to tell the Dun chocolates from the SL chocolates. Breeding them to something else might give a clue though. Someone may have a way for telling them apart, but I surely can't.

I would think the seller could tell you what was in the pen, unless she's got a modge podge of colors and pens.

I suspected as much but onky have the 1 chocolate pullet that hatched with them. I don't have a black and the only blue is a blue-buff mix so I wouldn't trust that. She didn't know Dun/SL until I asked, which was after hatching. The impression I got is that she has breeding pens for early spring when she does the rent an incubator program, and then free ranges them as mixed groups otherwise. She said she gets the occasional white/cream and black from her "mixed orpington pen" of chocolate, laced chocolate, lavender, buff, and black. Among the chocolate, some are "milk chocolate" and some are "dark chocolate." I hatched the chocolates but bought the white ones as chicks because my hatch was 90% Roo.

Any opinion on which Roo I should keep?

 

[Debbie292d]

I suspected as much but onky have the 1 chocolate pullet that hatched with them. I don't have a black and the only blue is a blue-buff mix so I wouldn't trust that. She didn't know Dun/SL until I asked, which was after hatching. The impression I got is that she has breeding pens for early spring when she does the rent an incubator program, and then free ranges them as mixed groups otherwise. She said she gets the occasional white/cream and black from her "mixed orpington pen" of chocolate, laced chocolate, lavender, buff, and black. Among the chocolate, some are "milk chocolate" and some are "dark chocolate." I hatched the chocolates but bought the white ones as chicks because my hatch was 90% Roo.

Any opinion on which Roo I should keep?

I guess if it were me, I'd keep the one that seems the deepest, richest chocolate. If that's the funky-toed one, and she's a good Orp breeder, that could have just been a fluke.

Is Khaki an Orp color, or could that be mauve?

Here's the link I use a lot for what makes what, and they never bring up Dun or SL. https://www.backyardchickens.com/th...n-color-genetics.1219858/page-2#post-19511066

Here is a genetic calculator that many use:
https://kippenjungle.nl/chickencalculator.html

And if that confuses you like me, here's the basics: https://sellers.kippenjungle.nl/page1.html

 

[The Moonshiner]

I've been out of the Orps for several years now. When I did raise them that was when lavender was newish and hot. Chocolate was around the same time. Might be a thing now but all mine and everyone else's I knew of then were sex linked Chocolate.
If dun has became a thing within orps it was late in the Chocolate game so I can't imagine yours aren't SL Chocolate.