I think 3RiversChick did a lot of research on the Llodiana or Rubio Alavesa which is the "Blonde" breed of Basque Chicken that was recently recovered in Spain. I have found her searching and discussing it in several forums so it looked like she really had a fire under her to breed that color. I think she abandoned the idea because she learned the Llodiana is NOT a variety of the Euskal Oiloa, but rather another breed of chickens that originated in the Basque region of Spain.
I am not clear on the history of the Rubio Alavesa, but think I saw mention of it being created from village flocks in coastal regions of the Alaba Provence.
I know Campos & Orozco worked with the EO's in the 70's to create the five EO varieties (which did NOT include Llodiana). Does anyone know what regions the EO's they worked with came from or what relation the EO's might have with the "lost" Rubio Alavesa?
It looks like the "recovered" Llodianas in Spain were selected largely from EO's. It is not clear to me if they used other breeds to recreate the Llodiana Breed (but am guessing they did). The two guys in Spain that have had so much press for recovering the Rubio Alavesa have only been working on the Llodiana breed for 2 years, have 30 birds in their flock, and say they don't know if they will breed true.