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.
识别特征
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.
分类信息
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.
- 学名
- Euchrepomis humeralis
- 命名信息
- (Sclater, PL & Salvin, 1880)
- 目
- Passeriformes
- 科
- Thraupidae
- 属
- Euchrepomis
分布与栖息地
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.
- 迁徙
- Resident species
行为
The chestnut-shouldered antwren is believed to be a year-round resident throughout its range.<p>The chestnut-shouldered antwren feeds on arthropods, though details of its diet are lacking. It typically forages in pairs or small family groups that usually join mixed-species feeding flocks. It forages almost entirely in the forest canopy, acrobatically gleaning prey from leaves and the ends of branches.<p>Nothing is known about the chestnut-shouldered antwren's breeding biology.<p>The chestnut-shouldered antwren's song is "very high, thin, slightly descending, gradually accelerating to a 'fuh-fuh-weet-weet-d-rrr' rattle".
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Collared Puffbird
Bucco capensis
Distinctive medium-sized rainforest bird, easily recognized by large, mostly bright cinnamon head and orange bill, whitish underparts, and clean black band completely encircling nape and breast. Inhabits lower and middle levels of tall rainforest, sometimes up to the canopy, where it sits motionless before making sudden flights to bark, foliage, or ground for large insects and small vertebrates. Encountered singly or in pairs, but rather seldom seen due to lethargic behavior. Typically silent during the day; song—given well before first light—is a wild-sounding series of quavering notes that is unlike that of any other bird.
Western Spindalis
Spindalis zena
Uncommon in thickets, forest edge, and gardens, where found mainly at fruiting trees and bushes. Usually in pairs or small flocks, and often quite inconspicuous. Handsome male is unmistakable, with bold head pattern, golden-yellow and dark reddish body plumage, and bold white wing pattern. Female is notably drab, grayish olive overall with a small white mark on the wing, and a ghosting of the male wing pattern.
Round-tailed Manakin
Ceratopipra chloromeros
Fairly large manakin of mature rainforest understory and midstory. Males are black with red head, yellow leg feathering, and a light eye; females are dull green with a variable yellow wash from the throat to the belly and undertail coverts and a dark eyel. Both sexes have a pale tan bill and rounded tail. Males most similar to Red-headed Manakin, which has a darker, usually orange eye (not white or pale gray) and red leg feathering (not yellow). Females distinguished from most other species by pale bill, and most similar to Red-headed and Golden-headed Manakins, which are slightly duller (not as bright yellow underneath) and have square (not rounded) tails. Listen for the male’s song, a sneezy “tsi-BRRT”.
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