Esmeraldas Antbird (Sipia nigricauda) [XC828647]
by Jos\u00e9 Mar\u00eda Loaiza B. from Distrito Metropolitano de Quito, Pichincha, Parroquia Nanegalito, Nueva Granada, Hacienda Los Yumbos, Ecuador (song)
Esmeraldas Antbird (Sipia nigricauda) [XC3870]
by Scott Olmstead from Finca Cuatro Rios, San Miguel de Los Bancos, Pichincha, 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.