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) [XC668730]
by Guilherme Renzo Rocha Brito from Estrada da Graciosa, Paran\u00e1 state, Brazil (song, estalar de bico.)
Serra do Mar Tyrannulet (Phylloscartes difficilis) [XC325902]
by Jeremy Minns from Road to Pedra do Ba\u00fa, Campos do Jord\u00e3o, SP, Brazil (song)