African Yellow-Warbler
Iduna natalensis
Mid-sized, long-billed warbler with rich yellow underparts and an olive-green back. The color of the cap varies geographically. In some subspecies, it is black, while in others, it is olive-green like the back. Found in wet scrub, often adjacent to wetlands. Generally skulks in thick undergrowth. Distinctive song is a couple of quick introductory chips followed by a vibrating trill. Other yellow-warblers are similar, but have a paler cap and are found in different habitats.
识别特征
The African yellow warbler is a medium-sized warbler in which the whole of the upperparts and tail are yellowish-brown, with a slightly browner crown and yellower rump. The wings have brown feathers edged with yellow. The underparts are bright yellow with an olive wash on the sides of the breast, flanks and lower belly. The bill is pale on the upper mandible and blackish on the lower, and the legs are blackish. Females have duller underparts, and the juveniles are similar to the males but are buffier. The total length is 13 cm (5.1 in) and the birds weigh between 10 and 15 g (0.35 and 0.53 oz).<p>The song of the African yellow warbler is a rapid series of throaty and varied notes preceded by a few raspy notes, for example, "chip-chip-chip- whee-lee-wheeo". The alarm call is a sharp "tsk" or "chirr".
分类信息
- 学名
- Iduna natalensis
- 命名信息
- (Smith, A, 1847)
- 目
- Passeriformes
- 科
- Acrocephalidae
- 属
- Iduna
分布与栖息地
The African yellow warbler is a bird of rank vegetation and occurs in reeds, overgrown waterside vegetation and forest edges, especially where these are integrated with wetter vegetation.
- 迁徙
- Resident species
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类

Acadian Flycatcher
Empidonax virescens
Small flycatcher with big peaked head and relatively long bill. Extremely similar to several other species, especially Alder and Willow Flycatchers. Greenish-olive above and pale whitish below. Note thin white eyering and very long wingtips. Best distinguished from other flycatchers by habitat and voice. Birds near the northern end of breeding range prefer shaded ravines with mix of hemlocks and deciduous trees; farther south, found in mature deciduous forests. Tends to stay high in the canopy. Song is an explosive “pwit-SIP!,” call note is a sharp “pweek!”

Four-banded Sandgrouse
Pterocles quadricinctus
A small, short-tailed, intricately marked sandgrouse. The distinctive male has black marks on top of the head and three bands across the underparts. The female is plainer. Both sexes have a finely barred dark belly. Found in savanna and cultivation. Usually in pairs or small groups. Similar in size and shape to Lichtenstein’s Sandgrouse, but lacks that species’ fine barring on the underparts. Female separated from female Black-faced Sandgrouse by the lack of a strong white mark across the underparts. The call is a rattling, high-pitched “brrr-eeee,” often given in flight.

Red-backed Mousebird
Colius castanotus
A brownish-gray dumpy-bodied bird with a long scruffy tail, a reddish back, brown ears, a brown crest, and pale eyes. Occurs in small sociable groups in forest edge, woodland, thorn scrub, and cultivated areas along the Angolan escarpment, where it is endemic. One of the most familiar and beloved birds of Angola, where it is known as the “Rabo-de-junco”. Scrambles through bushes and tangles, creeping on short legs. In flight, it appears heavy, fluttering rapidly. Calls include a harsh “chee” and twittering notes like those of Speckled Mousebird, which differs from Red-backed by being lightly barred on the breast and mantle, having a brown back, and in the area of overlap in northern Angola, having dark eyes.
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