Chestnut-shouldered Antwren
Euchrepomis humeralis
Small canopy antwren. Gray head, with yellowish underparts, and wingbars; males have a fine black eyeline and cap. Less apparent field marks are its small reddish shoulder patch and reddish back patch. Moves more sluggishly than greenlets or tanagers, which it often joins in mixed-species flocks. Its song is an accelerating series of high, thin notes.
Identification
The chestnut-shouldered antwren is 9.5 to 11 cm (3.7 to 4.3 in) long and weighs about 7 to 8 g (0.25 to 0.28 oz). The sexes have different plumage. Adult males have a whitish supercilium and a thin dark line through the eye on an otherwise pale gray face. Their crown and nape are black, their back greenish olive, their rump rufous-chestnut, and their uppertail coverts and tail grayish olive. Their wing coverts are blackish gray with whitish tips that form two bars on the closed wing, their flight feathers olive-tinged blackish gray with pale olive-yellow edges, and the bend of the wing rufous-chestnut. Their throat and breast are pale gray and their belly and undertail coverts are pale yellow. Adult females have a olive-brown crown, nape and eyeline, a pale gray supercilium, and dark olive-brown wings with at most a trace of chestnut at the bend.
Taxonomy
The chestnut-shouldered antwren was described by the English ornithologists Philip Sclater and Osbert Salvin in 1880 and given the binomial name Terenura humeralis. There it remained until the current genus Euchrepomis was created in 2012 following phylogenetic analysis.<p>The chestnut-shouldered antwren is monotypic.
- Scientific name
- Euchrepomis humeralis
- Authority
- (Sclater, PL & Salvin, 1880)
- Order
- Passeriformes
- Family
- Thamnophilidae
- Genus
- Euchrepomis
Range and habitat
The chestnut-shouldered antwren is found from eastern Ecuador and eastern Peru south of the Rio Napo south into northwestern Bolivia and east in Brazil through northern Rondônia and into Amazonas state as far as the Rio Madeira. It inhabits the subcanopy and canopy of terra firme and drier floodplain tropical evergreen forest.
- Migration
- Resident species
Behavior
Migration pattern: Resident species.
Conservation
Population trend: declining.
- Population trend
- declining
Photos
Distribution
Bird Calls
Other Birds
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