Breeds central Chile (Santiago south to Valdivia), northern and eastern Argentina (south to Chubut and Buenos Aires), Uruguay and south-eastern Brazil (Rio Grande do Sul); in non-breeding season north to Paraguay.
 
Population
Estimated population is unknown (2012) and decreasing.
Warbling Doradito (Pseudocolopteryx flaviventris) [XC22309]
by Bernabe Lopez-Lanus from Praia do Junquinho - Pelotas, Rio Grande do Sul, Brazil (call)
Warbling Doradito (Pseudocolopteryx flaviventris) [XC108249]
by Fernando Jacobs from Saladillo-Meridiano Road, Buenos Aires, Argentina (song)
Subspecies
Pseudocolopteryx flaviventris (Sibley and Monroe 1990, 1993) has been split into Pseudocolopteryx flaviventris and Pseudocolopteryx citreola following SACC (2010).
Chilean birds may be slightly larger in size than those elsewhere in range. Further study is needed.