Gymnopithys leucaspis
The White-cheeked Antbird (Gymnopithys leucaspis) is a striking member of the antbird family (Thamnophilidae), renowned for its obligate association with army ant swarms. Measuring approximately 13-14 cm (5.1-5.5 in) in length and weighing 23-28 g (0.8-1 oz), this species is characterized by its dull olive-brown plumage above, pale greyish-white underparts, and most notably, a prominent, bare white or pale blue skin patch on its cheeks and around its eyes, which serves as its key identificati...
This species primarily inhabits the understory of humid lowland and montane evergreen forests, including primary and mature secondary growth, up to elevations of about 1,600 meters (5,250 feet). It can also be found in adjacent semi-deciduous forests and dense scrub.
The diet consists almost entirely of arthropods (insects, spiders) and other small invertebrates flushed by army ant swarms. They primarily forage by darting from low perches to capture prey fleeing the ants.
White-cheeked Antbirds are diurnal and spend most of their active hours closely associated with swarms of army ants (primarily Eciton burchellii and Labidus praedator). They perch low to the ground, scanning for insects, spiders, and other small animals flushed by the ants, darting quickly to sei...
The White-cheeked Antbird has a broad distribution across Central and South America, ranging from eastern Honduras south through Nicaragua, Costa Rica, and Panama. In South America, its range continues through western and northern Colombia, western Ecuador, northeastern Peru, western Brazil (east...
Least Concern
- The White-cheeked Antbird is considered an 'obligate ant-follower,' meaning it relies almost entirely on army ants to find its food. - Its distinctive bare white or pale blue facial patch is thought to serve as a clear visual signal to other birds during the chaotic foraging around ant swarms. ...