Rwenzori Batis
Batis diops
Typical black, white, and gray batis. Note the broad black chest band and the white slash across the wing. The eye is yellow in males and orange in females. Found in montane forest, usually in pairs in the mid-story. The vocalizations include high piping notes by the male that are often accompanied by a low bleating from the female. Similar to Ituri Batis but found at higher elevations, and separated by its broader black band across the breast.
识别特征
The Rwenzori batis is a small, active black and white Old World flycatcher. The upperparts are dark bluish black with a white stripe along the wing and a white loral spot. The underparts are mostly white except for a glossy bluish black breast band, a black chin spot and black thighs and grey axillaries. The tail is black with the feathers having white tips and white edges on the outer tail feathers. The sexes are similar except that males have yellow eyes and females have been reported sometimes to have orangey-red eyes. Juveniles are similar to adults but the plumage has a more rufous cast. The Rwenzori batis measures 11–12 cm (4.3–4.7 in) in length, and it weighs 8–15.5 g (0.28–0.55 oz).<p>The territorial call is a slow low-pitched whistle, which has been described as both ventriloqual and eerie. It is repeated with an interval of 2–4 seconds between each whistle.
分类信息
The Rwenzori batis belongs to the family Platysteiridae, which also contains Margaret's batis, the Cape batis, Forest batis, dark batis and Woodwards's batis. The Rwenzori batis appears to replace the Ituri batis at higher altitudes.
- 学名
- Batis diops
- 命名信息
- Jackson, FJ, 1905
- 目
- Passeriformes
- 科
- Platysteiridae
- 属
- Batis
分布与栖息地
The Rwenzori batis occurs in the Albertine Rift from the Rwenzori Mountains in the north to Mount Kabobo in the south. It was also recorded in western Uganda, Rwanda and Burundi.It inhabits montane evergreen forest at altitudes of 1,340–3,300 m (4,400–10,830 ft), foremost in dense African alpine bamboo forest or otherwise closed canopy forest on ridges. It also occurs in mixed forest and scrub.<p>In 2004, it was recorded in Virunga National Park, Mgahinga Gorilla National Park and Volcanoes National Park.
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: stable.
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Gray-sided Flowerpecker
Dicaeum celebicum
A tiny, stubby, plump dark songbird with a bold red throat in males. Female is nondescript, all gray with a clean white throat. Juveniles resemble female but have a pale-based bill and a green-washed breast. Singles and pairs can be found in lowlands and foothills in a variety of habitats, including forest, forest edge, scrub, and gardens. Male can be separated from male Crimson-crowned Flowerpecker by red throat and lack of red crown. Female Gray-sided differs from female Crimson-crowned in absence of red rump. Song is a thin, high-pitched “see-se-sooo.” Also gives a buzzy “tzjit” note.
Visayan Tailorbird
Orthotomus castaneiceps
A small, long-billed, long-tailed bird of dense tangled undergrowth in lowland forest. Has olive-green wings and tail, a pale belly, a gray back of the neck, a gray back, and a gray chest with streaks. Note rufous cap and orange legs. Somewhat similar to leaf-warblers, but has a longer bill and a rufous cap. Song consists of a medium-pitched, whistled melody, “plik-wod plick-wee,” sometimes given in duet. Also gives downslurred nasal scolds.
Spectacled Thrush
Turdus nudigenis
A medium-sized, medium-brown denizen of open woodlands; found feeding both in the trees and on the ground. Best distinguished from similar Cocoa Thrush by its bold orange-yellow eyering and its somewhat pale bill. Song is a series of sweet up-slurred and down-slurred whistles. Most common calls, which are quite different from those of Cocoa Thrush, are an inflected catlike “mew-uh.”
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