Hmmm I'm just guessing here but it looks like they are both likely partridge based with the addition of the columbian gene in Biscuits case that pushes the black/blue to the tail and wingtips mostly.
Smokey looks maybe blue based and Biscuit might be as well or even a darker splash base given the way some of his tail feathers are darker than others.
I'm guessing you will get grey (silver partridge) and Columbian grey offspring from these two that may be blue/black/or splash based (or only blue and splash based partridge/grey if Biscuit is actually splash). The red leakage is likely to show up in male offspring and will probably not be very noticeable in female offspring. Biscuit looks silver based to me but if he is actually silver/gold you might also get some partridge and buff (gold based) offspring from the pair as well. If Biscuit happens to be homozygous for columbian I think that would mean all the offspring would inherit one copy. In a gold based partridge this would result in more of a buff look with smut (darker feathers) in the tail and wings.
I'm looking forward to seeing the offspring! If my guesses are right they should have some partridge type chipmunk markings as chicks most likely. The ones who inherit columbian may have less patterning but will likely still have a bit (like a bit around the eyes and a few spots/stripes on the back). I could be completely wrong though.
Here is the differences between how the red showed up on some of my grow outs I hatched around Easter with a red pyle project boy who has a somewhat similar amount of red to Biscuit and is also likely silver based over a red partridge hen. He has dominant white rather than Columbian though.
Here is how it looks on a silver partridge/grey girl from them (she has a sister who didn't get as much of it and looks more silver).... very subtle, you can see the brown tint in some areas though.
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Here is her silver partridge/grey brother....it shows up a lot more vibrantly on him.
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Here is a red pyle project girl from the pairing.....on the lighter base it becomes a lot more obvious.
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And here is a red pyle project boy from them (sorry the picture is blurry). The red is definitely the most obvious on him!
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Here are mom and dad
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It's easiest to tell when they are chicks since the crest isn't in the way but you can still tell when they are adults as well. If they have a very small vault it might not be very easy to tell they are vaulted though. You'll have to get a good look at the shape of the top of the head. I can usually do this by holding them and parting their crest so I can see to the skin on their heads. If the crest is wetted it can be easier to see as well.
I don't have any pictures of vaulted vs non in adults but here is some vaulted vs non chicks. That (brain/skull lump) that is raised on the head is the vault. Sometimes that entire portion sticking up has no skull over it (just skin) hence why vaulted can be much more prone to head injuries.
Sorry for some hatching goo, I find it easiest to see vaults when they are just hatched. A lot of time I'll let them dry off in a little heating pad cave while I hold them and I'll snap a quick pick to look back on to see how their vault and comb looked at hatch. Some might look dead but they are just tuckered out from hatching.
Here are some vaulted both newly hatched and dry
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And here are some non vaulted
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Since vault size can vary sometimes it can be hard to see a vault that is very mall. This chick has a vault though you may not really be able to tell by looking at a picture. In person I could see there was a very small one.
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Hmmm I don't have any experience with three of those (I have had easter eggers). Based on looks though it's a tie between the araucana (with the rumpless ones something about not having a tail looks adorable) and the salmon Faverolle (I just think they look really pretty).
Congratulations on your new little black pullet! All three look adorable (and very feminine)!
Super excited to finally have her go broody. Feels like i've been waiting forever.
