Oneillornis lunulatus
The Lunulated Antbird (Oneillornis lunulatus) is a small, enigmatic passerine belonging to the antbird family (Thamnophilidae), a diverse group endemic to the Neotropics. Measuring approximately 12-13 cm (4.7-5.1 inches) and weighing 15-18 grams, it exhibits subtle sexual dimorphism. Males are predominantly dark slaty gray, while females are more olive-brownish, though both sexes sport a distinguishing white crescent, or 'lunule,' on the breast, which is more prominent in males. This striking...
Found in the understory of humid foothill and lower montane forests, primarily near streams and ravines, at elevations ranging from 500 to 1700 meters.
Primarily insectivorous, feeding on a variety of insects and other small arthropods gleaned from leaves, branches, and vines.
This diurnal antbird is typically secretive, moving quietly and deliberately through the dense undergrowth, often staying close to the forest floor. Its foraging strategy involves gleaning insects and other arthropods from foliage, twigs, and bark in the lower strata. Though usually seen singly o...
The Lunulated Antbird is an endemic resident of the humid eastern Andean slopes, spanning a restricted range across southern Colombia, Ecuador, and northern Peru. In Colombia, its distribution includes the eastern Andes of Cauca and Nariño departments. Its range extends southward through eastern ...
Least Concern
- The 'lunulated' in its name directly refers to the distinctive white crescent (lunule) on its breast, derived from the Latin 'lunula' meaning 'little moon. - It is one of only two species in the small genus Oneillornis, sharing this distinction with Salvin's Antbird (Oneillornis salvini). - Des...