I've got two different sizes. Hatchery type that are abit larger, then I have the Show Quality type, that are extra tiny, almost Serama Sized.
I edited my original post.
OEGBs have Recessive Sex Linked Bantam Dwarfism. So, if a standard is used, breeding back to bantam would have to be done after the first, or second crossing.
The only rs I know are for single, & Rose combs, of course walnut too.
r+/r+, p+/p+ = Single Recessive comb
R/R, or R/r+ is Rose Comb(Dominant)
P/P, or P/p+ = Pea Comb(Dominant)
R/R, P/P = Walnut(Dominant)
R/r+, P/P = Walnut(Dominant)
R/R, P/p+ = Walnut(Dominant)
R/r+, P/p+ =...