Myrmotherula axillaris
The White-flanked Antwren (*Myrmotherula axillaris*) is a diminutive yet striking member of the antbird family (Thamnophilidae), known for its pronounced sexual dimorphism and its role in mixed-species foraging flocks. Measuring approximately 9.5-10.5 cm in length and weighing 7-10 grams, this species is characterized by its small size and active demeanor. Males are a sleek, glossy black overall, starkly contrasted by prominent white flanks and small white wing-bars, creating a distinct and m...
Found primarily in humid lowland evergreen forests, ranging from the understory to the mid-canopy. It also inhabits secondary growth and forest edges, typically at elevations from sea level up to around 1500 meters.
Feeds almost exclusively on small insects, spiders, and other arthropods. It forages by actively gleaning prey from foliage, branches, and twigs.
The White-flanked Antwren is a highly active, diurnal species, constantly on the move while foraging. It primarily employs a gleaning strategy, swiftly plucking insects and spiders from the undersides of leaves and small branches, often hanging upside down to reach prey. These antwrens are highly...
The White-flanked Antwren boasts an extensive geographic distribution across Central and South America. In Central America, its range spans from eastern Honduras south through Nicaragua, Costa Rica, and Panama. In South America, it is widespread across northern portions, including Colombia, Venez...
Least Concern
- The White-flanked Antwren is a key member of Neotropical mixed-species foraging flocks, often acting as a 'nuclear' species that other birds follow. - Despite its small size, its vocalizations are surprisingly far-carrying, especially its distinctive, accelerating whistled song. - The stark con...