This taxon is Not Recognised as a species by BirdLife International.
Treron australis and T griveaudi (del Hoyo and Collar 2014) were previously lumped as T. australis following Sibley and Monroe (1990, 1993).
BirdLife International (2016) Species factsheet: Treron australis. 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.