DanteD716 I agree. In the sunlight, her back color has a blue-base, like the grey in regular zebras, just lighter, while her cheeks and tummy are that intense peach color. The blue-based back and the orange-based color to her cheeks and tum really offset eachother well.
I'd rule out fawn, but efinch says sfFF+fawn is strange in that the fawn does nothing and doesnt show up on the bird with either sf or df FF. So, she could have fawn, but there is no visual way to tell. So, not super important if she is FF.
However, if she is isabel and fawn, the fawn would show up if she had it. So, probably not fawn, either way.
OB isabel or Florida Silver, with some cheek action, seem most likely.
FF is co-dominant, while isabel is a recessive, yes? But they are related, also, right? So if she is isabel and he is dfFF, we'll get all dfFF looking birds, with one gene FF and one gene isabel for each offspring.
But If she is sfFF, and he is dfFF, I should get 50% dfFF offspring and 50% sfFF looking offspring.
Should be a fun test mating!
Now, what are those cheeks? From the OB? I didn't know hens could have cheeks except from black cheek or fawn cheek mutations lol