Predicted Antwren
Herpsilochmus praedictus
Recently described Amazonian antwren. Males are gray with a bold white eyebrow and a black crown, wings, and tail. Females have white spots on a black crown and a rusty forehead. Found in humid forest, including seasonally flooded forest along big rivers and white sand forest, foraging from the middle levels to the canopy. Usually accompanies mixed-species flocks in the canopy. The song is a soft rolling trill. The rather similar male of the Aripuana Antwren has less black on the upperparts, and females have a paler forehead; Aripuana’s song is similar, but with fewer notes.
识别特征
The predicted antwren is 11 to 12 cm (4.3 to 4.7 in) long and weighs about 11 g (0.39 oz). Adult males have a black crown and nape, a long whitish supercilium, and a black streak through the eye. The rest of their upperparts are gray with black on the scapulars. Their wings are black with white tips on the coverts and white edges on the flight feathers. Their tail is black with large white feather tips and white edges on the outermost. Their throat is pale creamy white and their breast and belly whitish. Adult females have a rusty forehead and lores, and a black crown with white speckles. Their upperparts are gray. Their throat is a creamier white than the male's.
分类信息
The predicted antwren was first described in 2013. The name came from field biologists' expectation that a new species of antwren would be found in southwestern Amazonia. Its discovery confirmed the prediction, and genetic and vocal analysis confirmed its identity as a species. Regional and worldwide taxonomic systems quickly recognized it.<p>The predicted antwren is monotypic.
- 学名
- Herpsilochmus praedictus
- 命名信息
- Cohn-Haft & Bravo, 2013
- 目
- Passeriformes
- 科
- Thamnophilidae
- 属
- Herpsilochmus
分布与栖息地
The predicted antwren is found in the southern part of Brazil's Amazonas state, south of the Amazon between the rios Juruá and Madeira. Most of the sightings have been from the eastern half of its range, east of the Rio Purus. It inhabits the mid- to upper levels of humid evergreen forest, principally campinarana on sandy soil and terra firme on clay soils. It also occurs in seasonally flooded igapó but not várzea.
- 迁徙
- Resident species
行为
The predicted antwren is believed to be a year-round resident throughout its range.<p>The predicted antwren's diet is known only from the stomach contents of specimens, which were the remains arthropods. It forages singly, in pairs, and in family groups and often as a member of a mixed-species feeding flock. It mostly forages between 5 and 30 m (15 and 100 ft) by gleaning prey from vegetation.<p>Nothing is known about the predicted antwren's breeding biology.<p>The predicted antwren's song is "a soft, purring, rolling trill...which initially rises in frequency...before declining again to a frequency similar to that on which it started". The song is part of the evidence for its treatment as a species, as its pace and the number of repeated notes differ from the songs of visually similar others of its genus. It has two distinctive calls, a "dull 'pwip' " and (more frequently heard) "a short, sharply-descending 'chew', given either singly or in series".
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Yellow-throated Fiji Whistler
Pachycephala graeffii
A brightly colored songbird with a bright golden belly and throat, a black hood and chest band, and an olive upperside and wings. Female is dull overall, with brown upperparts, pale belly, off-white throat, and no breast band. Endemic to northern and western Fiji, where mostly inhabits mature forest, but also secondary growth. Song consists of a melodic whistled series, typically concluded with a decisive-sounding “whit!” note. Formerly treated as part of more broadly-defined “Fiji Whistler” alongside White-throated Fiji Whistler.
Yellow-fronted Parrot
Poicephalus flavifrons
A chunky, mid-sized parrot with a big bill and a short tail. Mostly dark green, with a large yellow patch on the face that is absent in immatures. An Ethiopian endemic that is found at middle elevations in a variety of woodland and forest habitats. The calls are thin, high-pitched screeches. Similar to Meyer’s Parrot, but there is little overlap in range, and Yellow-fronted is separated by the lack of yellow shoulders and by the green upperparts.
Chestnut-capped Babbler
Timalia pileata
Distinctive brown babbler with a small black mask, white throat, and rusty orange cap. Color scheme loosely similar to that of Streak-breasted Scimitar-Babbler, but has a proportionally longer and broader tail, no solid streaking on the breast, and a short, dark, uncurved bill. Inhabits reedbeds, tall grass, scrub, and weedy edges. Listen for its chattering and metallic call notes as flocks move around noisily in cover. Song is variable, but is usually some variant of a chittering whinny.
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