This taxon is Not Recognised as a species by BirdLife International.
Ceyx cyanopectus and C. nigrirostris (del Hoyo and Collar 2014) were previously placed in the genus Alcedo and lumped as A. cyanopectus following Sibley and Monroe (1990, 1993), the gender agreement of which followed David and Gosselin (2002a).
BirdLife International (2016) Species factsheet: Alcedo cyanopectus. 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.