Delta Amacuro Softtail is a recently described species, and is one of the least known species of ovenbird (Furnariidae). It is restricted to the Orinoco delta in the state of Delta Amacuro, in northeastern Venezuela. It is closely similar to Orinoco Softtail (Thripophaga cherriei) of the upper Orinoco River, another very poorly known species, but Delta Amacuro Softtail differs by being larger and is much more heavily streaked on the underparts and on the crown, and by having a deeper, richer color to the chestnut throat patch. Delta Amacuro Softtail forages in the midstory and canopy of mature floodplain forest. It typically travels in pairs, which search arthropods in vine tangles and along high limbs.