This taxon is Not Recognised as a species by BirdLife International.
Ardea intermedia, A. brachyrhyncha and A. plumifera (del Hoyo and Collar 2014) were previously placed in the genus Mesophoyx and lumped as M. intermedia following Sibley and Monroe (1990, 1993).
BirdLife International (2016) Species factsheet: Mesophoyx intermedia. Downloaded from http://www.birdlife.org on 06/12/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 06/12/2016.