This taxon is Not Recognised as a species by BirdLife International.
Butorides striata (del Hoyo and Collar 2014) was previously split as B. striata and B. virescens following AOU (2003), and before then B. striata was split as B. striatus and B. sundevalli following Sibley and Monroe (1990, 1993). Gender agreement of B. striata follows David and Gosselin (2002b).
BirdLife International (2016) Species factsheet: Butorides sundevalli. Downloaded from http://www.birdlife.org on 02/12/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 02/12/2016.