Brown-breasted Bamboo Tyrant (Hemitriccus obsoletus) [XC284206]
by Jeremy Minns from Serra da Bocaina. Casa da Bocaina, Brazil (call, song)
Brown-breasted Bamboo Tyrant (Hemitriccus) [XC234938]
by Romulo Vitoria from Sao Francisco de Paula National Forest, Brazil (song)
Subspecies
Formerly considered conspecific with Drab-breasted Bamboo-tyrant (Hemitriccus diops). Subspecies zimmeri initially named as naumburgae, but that name preoccupied when genus was enlarged.
The following 2 subspecies are recognised:
obsoletus (Ribeiro, 1906) - South-eastern Brazil, in western Rio de Janeiro (Serra do Itatiaia) and eastern Sío Paulo (Serra Bocaina and Serra Bananal).
zimmeri Traylor, 1979 - South-eastern Brazil, in Paraná and Rio Grande do Sul, and extreme north-eastern Argentina (Iguazú National Park).