Conventional wisdom used to be that locally common color phases were a founder effect in transplanted populations, the best known in turkeys being the smoke phase in Michigan and Minnesota flocks. True albinos don't have black eyes, and in at least some states wildlife department staff used to shoot pure white, dark-eyed birds on the presumption they were either feral domestics or crossbreeds. However, I've seen normal wild hens produce pure white, dark-eyed poults in areas with no known white toms or domestic toms, suggesting that either it is a natural recessive gene in wild birds, or a domestic incursion into the gene pool multiple generations back. In either case, I no longer advocate blasting them as a population management tool - either way, it shouldn't become dominant in a wild flock due to the disadvantages of being a white bird, unless the majority of breeding is being done between domestics and wild. I would not discourage a hunter from shooting one, unless the landowner didn't want it shot.
