Chestnut-vented Warbler
Curruca subcoerulea
Distinctive gray bird with a pale eye, streaked throat, rufous vent, and large white patches on the tail. Found in a variety of habitats with thick shrubs, including fynbos, karoo, semi-desert, and savanna. A fairly skulking species that is usually detected by voice: an exuberant mixture of ratcheting notes, chatters, and whistles. Similar to Layard’s Warbler, but easily distinguished by rufous vent and more heavily streaked throat.
识别特征
The chestnut-vented warbler is 14–15 cm long and weighs around 16 g. Its upperparts are grey-brown, and the tail is black with a broad white band at its tip. This warbler has a white eye ring. The throat is grey with heavy dark streaking, the breast and belly are grey, and the vent area is bright chestnut. The legs are black and the eyes are grey. The sexes are similar, but the juvenile has an unstreaked throat. The call is a loud fluted cheerup-chee-chee.<p>Layard's warbler, Curruca layardi, is the only similar species, but is paler, has more white in the tail, and lacks the chestnut vent.
分类信息
The first formal description of the chestnut-vented warbler was by the French naturalist Louis Pierre Vieillot in 1817. He introduced the binomial name Sylvia subcœrulea using the œ ligature. The specific epithet would normally be spelled subcaerulea or subcærulea and comes from the Latin sub meaning somewhat or beneath and caeruleus for blue. In modern Latin subcaeruleus is used to indicate pale blue. Most authorities use the standard spelling subcaerulea but some use the original spelling subcoerulea.
- 学名
- Curruca subcoerulea
- 命名信息
- (Vieillot, 1817)
- 目
- Passeriformes
- 科
- Sylviidae
- 属
- Curruca
分布与栖息地
- 迁徙
- Resident species
行为
The chestnut-vented warbler builds a cup nest low in vegetation. This species is monogamous, pairing for life. It is usually seen alone or in pairs, moving through vegetation as it forages for insects and other small invertebrates.
保护状况
This common species has a large range, with an estimated extent of 2,800,000 km2. The population size is believed to be large, and the species is not believed to approach the thresholds for the population decline criterion of the IUCN Red List (i.e. declining more than 30% in ten years or three generations). For these reasons, the species is evaluated as Least Concern.
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Crested Guan
Penelope purpurascens
Very large, long-tailed game bird of tropical and subtropical forest. Often seen high in trees or flying through the forest canopy; usually not seen in areas near people except in some protected areas due to hunting pressure. Typically in pairs or small groups and wary. Plumage dark overall (often looks blackish) with bright red throat wattle; white streaking on body visible at closer range. Crest is bushy and usually not a striking feature.
Red-necked Nightjar
Caprimulgus ruficollis
Resembles Eurasian Nightjar, but larger with a rufous collar and upper breast and lacks the dark “forearms” seen on Eurasian Nightjar. Note the prominent pale tips on the wing coverts. Most active at dusk when hawks for flying insects. Voice is a distinctive repetitive “tuok-tuok-tuok” rising and falling in volume. Haunts sparsely to moderately vegetated open areas such as rocky hillsides, pinewoods, and semidesert in the breeding season and winters in similar habitats in West Africa.
Pygmy Cupwing
Pnoepyga pusilla
Essentially a tiny brown tennis ball supported by tiny chopsticks. Dark brown above with densely packed black-and-white scaling on the underside. Gives the impression of a tailless rodent as it makes its way furtively through dense shrubbery and leaf litter. Can be quite vocal and is jarringly loud for its size, giving single well-spaced piercing whistles on different high pitches, and occasionally an accelerating, usually rising rapid series of whistles. Also gives a sharp chip.
开始您的观鸟之旅
在户外识别鸟类，并在下一次观察时随手查阅鸟类图鉴。