Rio Mucuri, Bahia, Brazil.
MtDNA study revealed weak support for relationship between present species and N. grandis#R. For most of its recorded history, race longicaudatus has generally been considered a separate species (incorporating chocoensis as a race), but was recently lumped with present species, although on rather scanty evidence; on basis of distinctive morphology, separate species status may be appropriate, but voices apparently similar#R; further research required. Three subspecies currently recognized.
A specimen from near mouth of R Amazon has been attributed to nominate aethereus, but probably erroneously.
Food and feeding
Status and conservation
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