This taxon is Not Recognised as a species by BirdLife International.
Nisaetus philippensis and N. pinskeri (del Hoyo and Collar 2014) were previously lumped as N. philippensis following Haring et al. (2006), which before then was placed in the genus Spizaetus following Sibley and Monroe (1990, 1993).
BirdLife International (2016) Species factsheet: Nisaetus philippensis. 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.