Driophlox atrimaxillaris
The Black-cheeked Ant-Tanager (Driophlox atrimaxillaris) is a striking passerine endemic to the humid lowland forests of the Pacific slope of Costa Rica. Measuring approximately 18-19 cm (7.1-7.5 in) in length and weighing 42-49 g (1.5-1.7 oz), this robust bird is characterized by its olive-green upperparts, brilliant yellow underparts, and a distinctive velvety black mask covering the lores, cheeks, and chin. Its thick, conical bill and dark legs complete its characteristic appearance, makin...
Found in undisturbed, humid lowland tropical wet forests, often near streams, ravines, or swampy areas. Typically occurs at elevations between 300 and 700 meters above sea level.
Primarily insectivorous, feeding on a variety of insects (ants, beetles, orthopterans, larvae) flushed by army ant swarms. Also supplements its diet with small fruits and berries gleaned from vegetation.
The Black-cheeked Ant-Tanager is a highly active and often elusive bird, primarily found in pairs or small family groups. Its daily activity is largely centered around foraging, frequently following army ant swarms (e.g., *Eciton burchellii*) to capture insects flushed by the ants' movements, a s...
The Black-cheeked Ant-Tanager is strictly endemic to the Pacific lowlands of southwestern Costa Rica, with its distribution centered primarily on the Osa Peninsula and the Golfo Dulce region. Key strongholds include the Corcovado National Park, Carara National Park, and Esquinas National Park, as...
Endangered
- This species is entirely endemic to a very small region of the Pacific slope of Costa Rica, making it one of the country's most localized birds. - It is a classic 'ant-follower', relying heavily on army ant swarms to flush out insects from the forest floor. - Its genus, *Driophlox*, was recentl...