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
Speckle-chested piculet markings. The flanks and the rest of the underparts are barred in black and white. The tail is blackish apart from the central two feathers and a bar near the tip which are white. The front of the crown in males is red while in females it is black. The speckle-chested piculet is endemic to Peru. It has a rather limited range, being only known from the central Huallaga Valley and certain parts of the Utcubamba Valley in the foothills of the eastern Andes in Peru. Its altitudinal range is between about . Its main habitat is primary moist lowland