Ini nga species ginbahin ha masunod nga subspecies:[4]
- C. n. notatus
- C. n. obsoletus
- C. n. puruensis
- ↑ (1998) , website, Zoonomen - Zoological Nomenclature Resource
- ↑ Dickinson, Edward C., ed. (2003) , The Howard and Moore Complete Checklist of the Birds of the World, 3rd edition
- ↑ 3.0 3.1 (2005) , website, Zoonomen - Zoological Nomenclature Resource, 2005.11.05
- ↑ 4.0 4.1 Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (ed.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 24 Septyembre 2012.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)
- ↑ ITIS: The Integrated Taxonomic Information System. Orrell T. (custodian), 26 Abril 2011