The Olivaceous Piculet is the smallest bird species in the Woodpecker family. Its sound as it pecks on vines resembles that of the Telegraph, hence its common Spanish name, “Telegrafista”. Both male and female show very small white dots all over the crown, with the male also sporting bright orange feathers on the front of the head. The flanks of both sexes look faintly streaked in light brown and white, while the upperparts are dark brown. The center feathers that cover the tail’s upper side are white. Its range is restricted to two main zones, one in the northern part of Costa Rica up to San Juan river, and another in the southern region, from Quepos down to Ciudad Neily and Rio Jimenez.