White-barred piculet different sub-populations of this bird on either side of the equator in South America. The northerly population is in Guyana, northwestern French Guiana and northern Brazil. The southern population is in southeastern Brazil, eastern Bolivia, eastern Paraguay and northern Argentina. The white-barred piculet occupies various habitats including wet and dry woodland, forest verges, thickets, gallery forests, wooded savannah, scrub, bamboo clumps, vines, creepers and overgrown parks and gardens at elevations of up to about . It is a resident, sedentary species. The white-barred piculet usually forages singly, but may join small mixed species flocks. It feeds on ants, their larvae
Orinoco piculet feathers are brown tipped with green, and the tail is black, the two central feathers having white inner webs and the outer feathers having a white bar near the tip. The beak is blackish and the legs grey. The call is a thin "seep-seep" and the song a rather longer suite of similar notes. The Orinoco piculet is endemic to eastern Colombia and northwestern Brazil, and is likely to be present also in the adjacent part of southern Venezuela. Its habitat is open tropical humid rainforest, gallery forest, wooded savannah and clumps of trees and scrub at altitudes of up