Maybe @KPenley
will pop in. Although he is clearly not correct in every respect for the SOP (of either country), I do think his hackle and saddle are cream, especially when you can see it up against the white of his wings. I'm ready to if @KPenley
has better insights
While the pea comb of the Ameraucana is closely tied to the blue egg gene, the single comb is not. It would take 6 to 7 months from now to find out what his offspring are laying to know if he has the blue eggshell gene. And it would be helpful if the hens were white egg layers or specifically "Cream Legbars" that have a nice blue egg. If you have nice looking CL hens for him, then you could also see what happens with the feathers; I know he's not a good choice for a reliable gene pool, but he is an interesting choice =)
Added to say - I keep both feeders up all the time. The rooster usually eats the low calcium crumble and the girls go back and forth. If you have a chance to compare the nutritional list of the micro pellets with your normal layer, just look for a lower calcium content (really low) and a higher protein content (about 20% plus or minus). The main reason I use a crumble vs another pellet is so I can tell them apart =)
I'm stumped. The head, hackles, saddle and tail are pretty correct. The darker barred areas are diluted. Dr E. thinks that there may be a line with the allele Di (Dilute) that usually is associated with Buff or even some Silver breeds. Perhaps in this guy's past there was a cross that introduced Di to his gene pool.