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) [XC326204]
by GABRIEL LEITE from Serra do Mar State Park. Curucut\u00fa, Brazil (call, song)
Serra do Mar Tyrannulet (Phylloscartes difficilis) [XC81652]
by Rodrigo Dela Rosa from Itatiaia National Park. Agulhas Negras road, Brazil (song, song and mechanical sounds)