Buff-bellied Puffbird (Notharchus swainsoni) [XC404398]
by Eduardo Patrial from Bolles-kue, RN Bosque Mbaracay\u00fa, Canindey\u00fa, Paraguay (song, duo-song)
Buff-bellied Puffbird (Notharchus swainsoni) [XC838551]
by JAYRSON ARAUJO DE OLIVEIRA from Fazenda S\u00e3o Miguel, Itaj\u00e1, Goi\u00e1s, 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.