South-eastern Brazil (Goiás and Minas Gerais south to Rio Grande do Sul), central and eastern Paraguay, northern and eastern Argentina (Chaco and Misiones south to north-eastern Chubut) and Uruguay.
 
Population
Estimated population is unknown (2010).
Firewood-gatherer (Anumbius annumbi) [XC602386]
by Ricardo Jos\u00e9 Mitidieri from Parque Nacional Serra da Canastra, S\u00e3o Roque de Minas, MG, Brazil (song)
Firewood-gatherer (Anumbius annumbi) [XC388065]
by Pablo Alejandro Pla from Sapucaia, Rio de Janeiro, Brazil (song)
Subspecies
No obvious close relatives. Proposed subspecies machrisi, described from Goiás (Brazil), has been shown not to be diagnosable.