Some ornithologists have suggested that the Amazonian Barred-Woodcreeper, as currently constituted, might comprise as many as three species groups, although much more detailed work will be needed to satisfactorily prove this hypothesis. This large woodcreeper is distributed across much of Amazonia, from southern Venezuela and the Guianas south and west to northern Bolivia and eastern Peru. There is also a tiny, and highly isolated population in northeast Brazil. Although it prefers tall humid terra firme forest, the species also occurs in areas subject to seasonal inundation, as well as in mangrove and savanna forests. Second growth and gallery forests are also utilized. The Amazonian Barred-Woodcreeper regularly attends ant swarms and joins mixed-species flocks; its diet is reasonably catholic, being primarily based on insects, but also includes small vertebrates. Females, which are larger than males, may be dominant over their mates when feeding. The nest seems to be either an old woodpecker hole or a natural cavity in a tree.