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
Guinea Turaco
Tauraco persa
A small green turaco with a red bill that inhabits lowland forests in West and Central Africa. More commonly found in disturbed forests than its yellow-billed relative, the Yellow-billed Turaco. Guinea Turaco has darker blue-purple wings and tail than other species in its range. Advertising call, like that of many turacos, is a raucous series of up to 15 caws that grow louder through time.
Pink-billed Parrotfinch
Erythrura kleinschmidti
A distinctive, mostly tree-dwelling finch. Body uniformly green, rump red. Note the striking black mask and the contrasting thick pale pink bill. Prefers forest and forest edge, but also found in adjoining scrub, up to 1000 meters of elevation. Voice is a thin, high-pitched “cheee cheee cheee.”
Marail Guan
Penelope marail
Medium-sized guan of rainforest canopy. Usually appears entirely dark; note short-legged profile, contrasting red throat patch, and sluggish behavior. Slips quietly through canopy, feeding on fruit; typically found alone or in pairs but may congregate at fruiting trees. Generally wary, especially where hunted, but sometimes tolerates close approach. May be seen near the ground at forest edge or along roadsides. Very similar to Spix’s Guan; Marail is smaller and shorter-legged, but this can be surprisingly difficult to judge accurately.
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