Buff-bellied Puffbird (Notharchus swainsoni) [XC60622]
by Alex Matthews from PN Iguazu-Yacaratia, Misiones, Argentina (call)
Buff-bellied Puffbird (Notharchus swainsoni) [XC118301]
by Myriam Velazquez from Microregion of Caraguatatuba, S\u00e3o Paulo, Brazil (song)
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.