Orange Ground-Thrush
Geokichla gurneyi
Large, brown-backed, orange-breasted thrush with bold white wingbars. Found in the understory of middle- and high-elevation forest. Generally shy and scarce. The song is musical and typically thrush-like: a chatty and cheerful series of whistles. The call is a very thin, rising trill. Very similar to Abyssinian Ground-Thrush, but has a different pattern on the head: an olive crown, black bar below the eye, and a broken white eye ring.
识别特征
Its length is 21–23 cm (8.3–9.1 in). The male weighs 44.5–64.5 g (1.57–2.28 oz), and the female weighs 48.5–76 g (1.71–2.68 oz). The upperparts are olive-brown; some parts have a grey tinge. The flight feathers are blackish-brown. There are two bars on the wing. The throat, breast and flanks are orange. The vent is white. There is an incomplete white eye-ring. The beak is dark. The legs are pink. The female is similar to the male but is less bright. The immature has mottled underparts.
分类信息
The orange ground thrush was described as Turdus gurneyi by Hartlaub in 1864. It is named after John Henry Gurney Sr., an English banker, politician and ornithologist. There are five subspecies: G. g. chuka found in central Kenya; G. g. raineyi found in southeastern Kenya; G. g. otomitra found in western Angola, southeastern Democratic Republic of the Congo, Tanzania, and northern Malawi; G. g. gurneyi found in eastern South Africa; and G. g. disruptans found in central Malawi to northeastern South Africa.
- 学名
- Geokichla gurneyi
- 命名信息
- (Hartlaub, 1864)
- 目
- Passeriformes
- 科
- Turdidae
- 属
- Geokichla
分布与栖息地
Its habitat is montane forests, namely the afromontane of southeastern Africa. The size of its range is estimated at 5,370,000 km2 (2,070,000 sq mi). It is found at elevations of 500–2,500 m (1,600–8,200 ft).
- 迁徙
- Vertical migration
行为
The orange ground thrush is crepuscular. It is sedentary, but makes altitudinal movements in some regions. Its call is tsip and cureek. Its song is a series of several mellow and melodious notes. It feeds on the ground. Its diet is earthworms, insects, molluscs and fruits. The breeding season is January to May in Kenya, August to December in Tanzania, October to January in Malawi, and September to December in Mozambique, South Africa and Zimbabwe. In breeding pairs, the female has been observed to consistently weigh more than the male. The nest is a deep cup built of moss, twigs, leaves, roots and ferns. There are 2 to 3 turquoise-blue eggs. The eggs are incubated for 15 days. The fledging period is 18 to 20 days.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
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Daptrius megalopterus
Uncommon to fairly common in the Andes, where its range does not overlap with closely related species to the north and south. Favors open habitats from puna plains to bleak desert and ski lodges, often with rocky cliffs nearby. Sails, soars, and tumbles easily on updrafts. Adult is strikingly patterned black-and-white with a black head and breast and a bold white tail tip. Juvenile is rather similar to smaller Chimango Caracara of lowlands, but distinguished by black (not pale) bill.
Western Meadowlark
Sturnella neglecta
Streaked brown above and yellow below with distinctive black "V" on breast. In flight, short wings and spiky tail with white outer feathers are apparent. Breeds in fields and grasslands throughout much of western North America, regularly as far east as Michigan. Winters in a wider range of open habitats, even agricultural fields and roadsides. Extremely similar to Eastern Meadowlark and best distinguished by voice: listen for musical gurgling song and "chuk" calls. In winter, plumage looks paler and more washed-out than Eastern Meadowlark, with a less contrasting head pattern. Western is also more likely to be in flocks and areas with shorter grass (less pristine, extensive grasslands).
Tagula White-eye
Zosterops meeki
A very little-known, small bird of foothill forest canopy and edge on Tagula Island where the only white-eye. Olive-green upperparts with yellow-green rump, blackish face and tail. White underparts from the throat to the belly and yellow under the base of the tail. Note the broad white eye-ring, broken at the front. Voice, gives a typical white-eye “peer” call. Apparently not seen in recent years.
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