South-eastern Brazil, from Minas Gerais and Espírito Santo south to Rio Grande do Sul.
 
Population
Estimated population is unknown (2010) and decreasing.
Status NT
Habitat destruction and degradation owing to expansion of pasture and cultivation is the main threat.
For more information see BirdLife International Species Factsheet.
Serra do Mar Tyrannulet (Phylloscartes difficilis) [XC347490]
by Ricardo Jos\u00e9 Mitidieri from Paraty, Rio de Janeiro, Brazil (song)
Serra do Mar Tyrannulet (Phylloscartes difficilis) [XC506621]
by Caio Brito from Estrada das Agulhas Negras, Parque Nacional Itatiaia, Itamonte, Minas Gerais, Brazil (call)