EditorialMelanerpes formicivorus, Print, The acorn woodpecker (Melanerpes formicivorus) is a medium-sized woodpecker, 21 cm (8.3 in) long, with an average weight of 85 g (3.0 oz)., 1700-1880.
EditorialAcorn woodpecker, Melanerpes formicivorus (Black-bearded woodpecker, Picus melanopogon). Handcoloured engraving from Edward Griffith's The Animal Kingdom by the Baron Cuvier, London, Whittaker, 1829.