Yellow-rumped Antwren

Euchrepomis sharpei

The Yellow-rumped Antwren (Euchrepomis sharpei) is a diminutive and strikingly marked member of the antbird family (Thamnophilidae), endemic to the humid montane forests of the central Andes. Measuring a mere 8.5-9.5 cm in length and weighing 7-8 grams, it is one of the smallest antwrens, easily identified by its vibrant, contrasting yellow rump patch set against an olive-green back. Males typically display a gray head, olive-green upperparts, bright yellow rump, and whitish underparts that f...

Habitat

Found exclusively in humid montane forest and cloud forest environments, typically at elevations between 1,200 and 2,000 meters above sea level.

Diet

Primarily insectivorous, feeding on small insects and spiders, which it gleans from foliage and bark.

Behavior

This active, diurnal antwren typically forages alone or in pairs, often as a key component of mixed-species flocks that traverse the forest mid-story and canopy. It employs a gleaning foraging strategy, meticulously picking insects and spiders from leaves, twigs, and small branches with quick, da...

Range

The Yellow-rumped Antwren is strictly endemic to the humid eastern slopes of the central Andes, with a fragmented distribution spanning southeastern Peru and western Bolivia. In Peru, it is found in the departments of Cusco and Puno, while its Bolivian range includes the departments of La Paz, Co...

Conservation Status

Vulnerable

Fun Facts

- The Yellow-rumped Antwren is one of the smallest antwren species, barely fitting in the palm of a hand. - Its bright yellow rump is a striking and unmistakable field mark, giving it its common name. - This species was once classified under the genus Myrmotherula, but DNA evidence led to its rec...

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