Tunchiornis luteifrons
The Guianan Greenlet (*Tunchiornis luteifrons*) is a small, active passerine of the family Vireonidae, captivating observers with its subtle yet striking yellow facial markings amidst a largely olive plumage. Measuring typically 10-11 cm in length and weighing a mere 7-9 grams, this species is characterized by its bright yellow lores, supercilium, and eye-ring, contrasting sharply with a dark slate-gray crown and olive-green upperparts. Its underparts fade from yellowish-olive on the throat a...
Inhabits the mid-story and canopy of humid lowland primary and mature secondary forests, favoring areas with dense foliage and often along forest edges or clearings with tall trees.
Primarily insectivorous, feeding on small arthropods, caterpillars, beetles, and larvae gleaned from foliage; occasionally supplements its diet with small berries or fruit.
A highly active and arboreal species, the Guianan Greenlet spends its day constantly moving through the foliage, primarily in the mid-story and canopy. It is a diligent insectivore, employing a gleaning strategy, meticulously picking insects and larvae from leaves and twigs while often hanging up...
The Guianan Greenlet is a resident species distributed across northern South America, primarily within the Guiana Shield region and adjacent Amazonian lowlands. Its core breeding and year-round range extends across all three Guianas: Guyana, Suriname, and French Guiana, where it is generally comm...
Least Concern
- The Guianan Greenlet was recently reclassified from the genus *Hylophilus* to *Tunchiornis*, following molecular phylogenetic studies that revealed significant genetic divergence, underscoring its unique evolutionary path. - Despite its bright yellow face, it is often considered an "LBJ" (Littl...