Ornithion semiflavum
The Yellow-bellied Tyrannulet (Ornithion semiflavum) is a diminutive and often inconspicuous member of the Tyrannidae family, measuring a mere 9.5 to 10.5 cm in length and weighing just 7 to 9 grams. Its appearance is characterized by olive-green upperparts, a contrasting bright yellow belly, a grayish head often with a faint pale eye-ring, and a small, pointed bill. A distinctive white spot on the lores, though subtle, can aid in identification. Taxonomically, it is a suboscine passerine, cl...
This species primarily inhabits tropical and subtropical moist broadleaf forests, including their edges, clearings, and secondary growth. It is typically found at lower to mid-elevations, generally below 1,500 meters.
Primarily insectivorous, its diet consists mainly of small insects such as beetles, flies, wasps, and ants, along with spiders. It forages by gleaning prey from leaves and twigs, and by short sally-gleans.
The Yellow-bellied Tyrannulet is a diurnal and highly active insectivore, often observed solitarily or, more commonly, as a regular member of mixed-species foraging flocks in the forest canopy and subcanopy. Its foraging strategy involves active gleaning of small insects and spiders from foliage ...
The Yellow-bellied Tyrannulet is a widespread resident across Central and northwestern South America. Its range extends from southeastern Honduras, through Nicaragua, Costa Rica, and Panama, and continues into Colombia, Venezuela, Ecuador, and northeastern Peru. In Central America, it is found pr...
Least Concern
- The Yellow-bellied Tyrannulet is one of the smallest members of the extensive tyrant flycatcher family (Tyrannidae), often overlooked due to its diminutive size. - Its distinctive, high-pitched calls are often the first, and sometimes only, indication of its presence in the dense forest canopy....