Ivory-billed woodpecker. Male 1.F. 2 and 3. Picus principalis. pl. 66 no. 14Havell, Robert, 1793-18781829Drawn from nature and published by John J. Audubon, F.R.S.E., F.L.S., M.W.S.Engraved, printed, and coloured by R. Havell, London.still image