A few pages back I inadvertently invented a term: "Buff Barring Gene." I was speaking in layman's terms as I know nothing of genetics or how to properly speak of genes, but I gather there is no such thing as a "Buff Barring Gene," which would probably have a weird name like "fi~fi~" anyway.
What I meant was: "whatever is in the genetic makeup of these birds that would show up as buff barring in the parts of the bird which are supposed to look white after the bird's first adult molt."
Now I'm reading the Delaware Genetics For Dummies thread. Which is a bit like trying to shove my head between volumes of encyclopedias in an overcrowded library.
Here are two quote from that thread which might better state what I mean ...
So ... it seems to me that what might be happening is the silver gene (S) somehow stops diluting the red pigment to white when body feathers re-grow after the first adult molt, so combined with the barred (B cuckoo) gene, the bird looks buff barred? Still a novice, so that's just a guess.
It's a shame. I was looking at the females yesterday, and the smaller of my two F4 hens is coming out of molt with buff/pale red body feathers and a spectacular tail (white-edged black, nice angle, and that strikingly-small & tidy fan of feathers like the in the SOP illustrations). When Zanna and I lifted this bird, though she is light-weight, she wasn't actually lighter than the much bigger-looking Delaware hen from my trio, so she is tighter feathered and more densely muscled in that "deceptively small looking" round way I'm beginning to really appreciate in the better specimens of this breed.
I should probably post this over in the Delaware Genetics For Dummies thread. I just wanted to try to clear up my clumsy language a bit here, where I misspoke.