White-browed Scrubwren
Sericornis frontalis
Small scrubwren with white eyebrow and pale iris. Has a dark face with a clear white eyebrow and chin stripe. Primarily olive-brown with a black-and-white shoulder patch and paler front. Chin is white with varying levels of black streaking depending on the location. This species is widespread across eastern coastal Australia, but is absent in the northern areas. Western edge of its expected distribution is the Mt Lofty Ranges east of Adelaide. Found in a wide range of habitats but typically only present where there is reasonably thick undergrowth. It often makes a grumpy buzzing call but also sings a clear musical song.
识别特征
Mainland birds measure .mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .den{vertical-align:sub}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}11.5 cm (4+1⁄2 in) in length and olive brown upperparts (greyish brown in the spotted subspecies and dark brown in Tasmania), with prominent pale irises and a white brow. The throat is white with faint streaks in the subspecies frontalis and laevigaster and heavily spotted in maculatus. Ear coverts are grey in frontalis and black in laevigaster, and brownish in the other two subspecies. The underparts are pale, though buff in laevigaster. The thin bill is black. The females are duller overall and generally have pale gray lores, whereas males have blackish lores. This allows most individuals to be reliably sexed in the field. The call is a loud high-pitched ts-cheer or ch-weip, ch-weip, ch-weip.
分类信息
The white-browed scrubwren was originally described by naturalists Nicholas Aylward Vigors and Thomas Horsfield in 1827. The specific epithet frontalis derived from the Latin frons "eyebrow". It is now divided into two subspecies:<p>S. humilis, the Tasmanian scrubwren, is found in Tasmania and Bass Strait islands and was formerly considered a subspecies of the white-browed scrubwren. It is larger at 13.5 cm long and lays larger eggs.<p>S. maculatus, known as the spotted scrubwren, occurs in coastal southern Australia, from Kangaroo Island and Adelaide westwards to Shark Bay in Western Australia. It is known to intergrade with the nominate subspecies where their ranges overlap. Genetic analysis in a 2018 study of the family found that this taxon was more divergent from S. f. frontalis than the Tasmanian or Atherton scrubwrens and hence proposed its reclassification as a species. It was reclassified as a species in 2019.
- 学名
- Sericornis frontalis
- 命名信息
- (Vigors & Horsfield, 1827)
- 目
- Passeriformes
- 科
- Acanthizidae
- 属
- Sericornis
分布与栖息地
The species favours forested or scrubby areas with plentiful undergrowth, from which it rarely ventures. It is a common bird in bushland areas around Sydney, and the New England Tablelands. It is sedentary.
- 迁徙
- Resident species
行为
Scrubwrens are predominantly insectivorous. They can be hard to spot but are very vocal and easy to localise. They occur in small groups of up to six birds and engage in cooperative breeding; namely that group members all help to feed and rear the young.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Togian White-eye
Zosterops somadikartai
A small green songbird with a black forehead, a yellow throat, and white underparts except for the base of the undertail, which is also yellow. Note the indistinct, intermittent white eye-ring. Active pairs or groups inhabit scrub and mangroves in the lowlands. Confined to the Togian Islands, where it is the only known white-eye. Song is a rapid, high-pitched warble: “wisisititititiwi.”
Chestnut-flanked White-eye
Zosterops erythropleurus
The most migratory of the Asian white-eyes, this minute bird breeds in the boreal woodlands of far northeastern China and Russia and winters in southern China and northern Southeast Asia. Frequently migrates in immense flocks and can often be seen in gatherings of thousands on headlands and islands. Bright yellow-green upper body, white underparts, and striking white eye ring give this species the general white-eye look, but the broad brush-stroke of rufous on the flanks distinguishes it from similar species. Vocalizations consist largely of high, sweet, rising “sweee”s.
Black-throated Coucal
Centropus leucogaster
A large forest coucal with a black throat and chest and a white belly. Western populations in the Democratic Republic of the Congo and extreme western Uganda are sometimes separated as Neumann’s Coucal based on their smaller size, but look very similar to eastern Black-throated Coucal populations. The similar Gabon Coucal, which has a rufous belly, replaces Black-throated in Central African forests. Black-throated typically gives a deep, bubbling, booming call series of up to 20 notes that fall and then rise in pitch. This call can be heard day or night.
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