A contribution to the ecology of the adult hoatzinPublished in Zoologica, in 1909, in volume 1, issue 2, pages 45-66An ornithological reconnaissance of Northeastern VenezuelaPublished in Zoologica, in 1909, in volume 1, issue 3, pages 67-114
An ornithological reconnaissance of Northeastern VenezuelaPublished in Zoologica, in 1909, in volume 1, issue 3, pages 67-114