Plain-breasted piculet endemic to South America on the eastern side of the Andes where it lives in the western part of the Amazon basin. The species is present in southern Colombia, eastern Ecuador, Peru and western Brazil at altitudes of up to . It is found in open parts of humid lowland forests, flooded forests, riverside corridors, swamps, thickets and groves, and logged areas with secondary growth and wooded pastures. It often occurs in areas of young "Cecropia" and "Mimosa" trees. The plain-breasted piculet is usually seen by itself or in pairs, but it will occasionally joins small flocks of birds of
White-browed piculet piculet is native to tropical southeastern Asia. Its range extends from northern India, Nepal, Bhutan and Bangladesh through southern China to Myanmar, Laos, Vietnam and Thailand. Its home is dense wet or dry forest with plenty of vines and bamboo, scrub and swampy woodlands. It is found at altitudes of up to . It forages in the understory layer not far above the ground, pecking and probing with its sharp beak. Its diet consists of small insects, bark beetles, ants, termites, spiders and other small invertebrates. It often forages in pairs or may join small flocks of mixed species, sometimes