This taxon is Not Recognised as a species by BirdLife International.
Horizocerus albocristatus and H. cassini (del Hoyo and Collar 2014) were previously placed in the genus Tropicranus and lumped as T. albocristatus following Sibley and Monroe (1990, 1993)
BirdLife International (2016) Species factsheet: Tropicranus albocristatus. Downloaded from http://www.birdlife.org on 04/12/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 04/12/2016.