Buff-bellied Puffbird (Notharchus swainsoni) [XC838550]
by JAYRSON ARAUJO DE OLIVEIRA from Fazenda S\u00e3o Miguel, Itaj\u00e1, Goi\u00e1s, Brazil (song)
Buff-bellied Puffbird (Notharchus swainsoni) [XC60622]
by Alex Matthews from PN Iguazu-Yacaratia, Misiones, Argentina (call)
Subspecies
Notharchus macrorhynchos (Sibley and Monroe 1990, 1993) has been split into Guianan Puffbird (Notharchus macrorhynchos), Notharchus hyperrhynchus and Buff-bellied Puffbird (Notharchus swainsoni) following SACC (2005).
Forms a superspecies with Guianan Puffbird (Notharchus macrorhynchos), and usually regarded as conspecific.