Esmeraldas Antbird (Sipia nigricauda) [XC395707]
by Iv\u00e1n Lau from El Oro: upper Buenaventura reserve, Ecuador (song)
Esmeraldas Antbird (Sipia nigricauda) [XC248452]
by Niels Krabbe from Pichincha: R\u00edo Pitsara and ridge 1 km NE Hda Francisco Rodr\u00edguez (=Asociaci\u00f3n Calvas), Ecuador (song)
Subspecies
Genus appears not to represent a monophyletic grouping, but traditional arrangement maintained pending further phylogenetic study. Forms a superspecies with Dull-mantled Antbird (Sipia laemosticta), and female formerly treated as a subspecies of that species. Also close to Stub-tailed Antbird (Sipia berlepschi). Male was formerly placed with Stub-tailed Antbird (Sipia berlepschi) in a separate genus, and known as Sipia rosenbergi. Sexes only relatively recently recognized as belonging to same species.