File:Ivory-Billed Woodpeckers - Campephilus principalis Audubon 001.jpg

Summary
Ivory-Billed Woodpeckers - Campephilus principalis, hand-colored engraving. Male on the left, female on the right. Artist: John James Audubon, American Painter (1785–1851) Date: 1827-1838 Source: Birds of America