GA Pluckers hatching some today and my best Brazilian hen hatched some a couple weeks ago. These are some of the best Oriental game fowl even though not listed. GA Pluckers coming from packoy Thai and Brazilian from Shamo, Asil, and Spanish games, perfected by the breeders that own them
Now i could be wrong but i dont see anything in that book calling a parrot beak asil an actual pure breed. My guess is they used kulang, thai and desi and when they inbred enough to get the deformed heads they kept family breeding them, only keeping the parrot beak headed