The warbling antbird is a complex consisting of six species of antbirds that until recently were considered a single species found throughout the Amazon in South America. Based on vocal differences and to a lesser degree differences in plumages, it has been recommended treating them as separate species:
- Guianan warbling antbird (Hypocnemis cantator).
- Imeri warbling antbird (Hypocnemis flavescens).
- Peruvian warbling antbird (Hypocnemis peruviana).
- Yellow-breasted warbling antbird (Hypocnemis subflava).
- Rondonia warbling antbird (Hypocnemis ochrogyna).
- Spix's warbling antbird (Hypocnemis striata).
- Isler, Isler, & Whitney. 2007. Species limits in antbirds (Thamnophilidae): The Warbling Antbird (Hypocnemis cantator) complex. The Auk. 124(1): 11-28.
- Zimmer & Isler. 2003. Hypocnemis cantator (Warbling Antbird). Pp. 645 in del Hoyo, Elliott, & Christie. 2003. Handbook of the Birds of the World. Vol. 8. Broadbills to Tapaculos. Lynx Edictions. Barcelona.
- Split Hypocnemis cantator by elevating H. flavescens, peruviana, subflava, ochrogyna and striata to species rank. South American Classification Committee. Accessed 2008-06-27
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