Until recently considered conspecific with S. coerulescens and S. grandis, but genetic#R and vocal evidence strongly indicates species rank in this case. Differs from both in its stuttering song with rather harsh-sounding downslurred notes, often with alternating high-pitched and low-pitched notes, thus lacking both long notes and a whistled song type (4) and delivering at a slower pace (2)#R; moreover, shows more white on mid-belly than the other two species (1). Recorded online material reveals that the switch in song type from present species to S. coerulescens occurs abruptly near Villavicensio, Colombia, and somewhere in NE French Guiana#R. Three subspecies currently recognized.
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