This taxon is Not Recognised as a species by BirdLife International.
Pauxi unicornis and P. koepckeae (del Hoyo and Collar 2014) were previously lumped as P. unicornis following Sibley and Monroe (1990, 1993).
BirdLife International (2016) Species factsheet: Pauxi unicornis. Downloaded from http://www.birdlife.org on 03/12/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 03/12/2016.