1859, U.S. Southern black dialectal inversion of woodpecker; in folklore, taken as the type of white folks (1929) and symbolically contrasted with blackbird.
[1929+ esp black; fr rural black use of the red-headed woodpecker, with dialect inversion of the word elements, as a symbol for white persons in contrast with the blackbird as a symbol for themselves; the red head may be the semantic base, suggesting redneck]