Ivory-billed Woodpecker, Campephilus principalis - John James Audubon
Hand-coloured aquatint engraving on paper of the Ivory-billed Woodpecker (Campephilus principalis), showing a male and two females. Plate 66 from "Birds of America" (1840) by John James Audubon. The original scientific name used by the artist was Picus principalis.
You can see this image in more detail in Google Art and Culture.