Comoro Thrush
Turdus bewsheri
A typical thrush in shape and size, but with unusual brown coloration. Varies significantly across the three islands where it occurs, and these populations may be full species. The Grand Comoro birds have plain pale brown underparts, the Moheli birds have darker blotching below, and the distinctive Anjouan birds are scaled on the underparts. Found in humid forest, secondary habitats, and plantations, mostly at higher elevations, though down to sea level in some places. The song is a typical thrush mix of whistles and quavering notes, whose exact structure varies on the different islands. Also gives “pik” notes, short trills, and a high-pitched “seet.”
识别特征
The Comoro thrush is a brown bird with olive tinged upperparts, slightly more rufous on the tail and wings. The underparts are whitish except for brown flanks and brown scaling on the breast and belly, central belly and undertail coverts are white. The females are browner than the males but otherwise similar, juveniles are more rufous. The length is 24 centimetres (9.4 in).<p>The song is a typically thrush-like series of melodious, rich notes which varies between islands. Alarm call is a sharp "twit" and there is a soft contact call.
分类信息
- 学名
- Turdus bewsheri
- 命名信息
- Newton, E, 1877
- 目
- Passeriformes
- 科
- Turdidae
- 属
- Turdus
分布与栖息地
Comoro thrush occurs in evergreen primary forest and forest edge from sea level to 700 metres (2,300 ft), except for the subspecies T.B. comorensis which occurs on Mount Karthala above this altitude as no forests exist lower than this. There are three recognised subspecies, each endemic to a single island. They are:
- 迁徙
- Resident species
保护状况
The Comoro thrush is classified as Near threatened by the IUCN and the main threat is habitat loss through forest degradation due to clearance by subsistence farmers and firewood cutting.
- 种群趋势
- declining
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分布
其他鸟类
Fan-tailed Cuckoo
Cacomantis flabelliformis
A medium-sized cuckoo, with a warm buff colored chest and belly. Bright yellow eyering and heavily barred tail. Take care to identify from Brush Cuckoo (which has a gray eyering), and from Pallid Cuckoo (which is paler and lacks the warm breast tones). Often detected by sound since this species calls frequently with a descending trill. Perches in the midstory on exposed branches, and flushes easily to a nearby perch.
Half-collared Sparrow
Arremon semitorquatus
Boldly-patterned sparrow found in the understory of humid forest and second growth; usually difficult to see. Note the bicolored bill (black above and bright yellow below) and black patches on either side of the breast. The black head contrasts with a narrow white eyebrow and gray nape. Olive-green above and largely white below with gray flanks. Listen for a high-pitched “tzee–tzeuuu-tzeeuuu” and a metallic “tic.”
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在户外识别鸟类，并在下一次观察时随手查阅鸟类图鉴。