Oriental Reed Warbler
Acrocephalus orientalis
In breeding range, this large, long-billed songster of expansive reedbeds can often be seen perched on top of a stalk belting its heart out, but on wintering grounds, it is more likely to be detected by a harsh, grating rattling from deep within the vegetation. Unremarkably plumaged, brown above, paler below, with a weak white supercilium and a short bristly crest, occasionally raised. Compare with other large reed warblers, especially Clamorous Reed Warbler.
识别特征
It is a large warbler, 18–20 cm long with a wingspan of 23–26 cm. The plumage is brown above with a paler rump and whitish tips to the tail feathers. The underparts are whitish below, browner on the flanks and undertail-coverts. There are narrow greyish streaks on the throat and breast. It has a dark eyestripe and a whitish stripe above the eye. The fairly long, heavy bill is brownish above and pink below with a bright orange gape. The feet are grey.<p>It is slightly smaller, slenderer and shorter-winged than the great reed warbler. Its tail is shorter and more square-ended than that of the clamorous reed warbler (A. stentoreus) and it has a slightly longer primary projection and a slightly shorter and thicker bill. The pale tip to the tail separates it from both species.<p>The song is a mixture of warbling phrases and guttural, croaking notes. It is given from a prominent perch such as the top of a reed stem or bush. The bird also has a loud, harsh chack call.
分类信息
- 学名
- Acrocephalus orientalis
- 命名信息
- (Temminck & Schlegel, 1847)
- 目
- Passeriformes
- 科
- Acrocephalidae
- 属
- Acrocephalus
分布与栖息地
The breeding range covers southern Siberia, Mongolia, northern, central and eastern China, Korea and Japan. It winters in north-east India and across South-east Asia to the Philippines and Indonesia, occasionally reaching New Guinea and Australia. It has occurred as a vagrant in Israel and Kuwait. It breeds mainly in reedbeds and can also be found in marshes, paddy fields, grassland and scrub where it forages for insects and other invertebrates.
- 繁殖区
- PAL : c Mongolia and se Russia s to n, e China, the Korean Pen. and Japan
- 非繁殖区
- to se Asia, Philippines and Indonesian Arch.
- 迁徙
- Complete migrants
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Mangrove Honeyeater
Gavicalis fasciogularis
Medium-sized honeyeater found in coastal habitats of eastern Australia. Back is brown-green, breast is gray, and underparts are pale. Distinguished from Varied Honeyeater by presence of clear barring on the throat and lack of yellow underparts and breast streaking. Usually found in or around mangroves, where it is typically quite conspicuous and vocal.
Black-headed Duck
Heteronetta atricapilla
An uncommon and easily overlooked small duck of lakes and wetlands, usually with surrounding reeds. Mainly seen singly or in pairs, sometimes in small groups, and at times sleeping with Lake Ducks. Note the long and low profile in the water and the long gray bill with a pink band at the base on males. Males have a black head, but females are notably drab brownish overall and are best identified by size and shape, and association with a male. Lays its eggs in nests of other birds, such as coots, ducks, and even herons. Ducklings fend for themselves.
Brown-bellied Swallow
Orochelidon murina
A rather dark swallow of the Andean highlands from Venezuela to Bolivia. Head and back are dark iridescent blue. Throat and belly are dusty grayish-brown. Tail is relatively long with a deep fork. Flocks are found over forest and clearings, especially around nesting sites on cliffs and landslides. Occurs from 2,500-4,000m, often higher than Blue-and-white Swallow but plenty of overlap.
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