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
Piculet of pronounced morphological similarities, but the two "Picumnus" lineages, despite having diverged long ago, are virtually alike except for head coloration (Fuchs "et al.", 2006). The Antillean piculet ("Nesoctites micromegas") has proven to be a very distinct species evolutionarily between piculets and woodpeckers (Benz "et al.", 2006) and thus is nowadays placed in a subfamily of its own. The arrangement of species in the genera follows del Hoyo "et al." (2002). Genus "Picumnus" Genus "Verreauxia" (sometimes included in "Sasia") Genus "Sasia" Piculet The piculets are a distinctive subfamily, Picumninae, of small woodpeckers which occur mainly in tropical South America, with