Large-billed Reed Warbler
Acrocephalus orinus
Poorly known, small gray-brown bird with a large bill, a flat forehead, and a short, pale supercilium. Extremely similar to Blyth’s Reed Warbler, but the Large-billed Reed Warbler has a longer bill, longer legs, and slightly shorter wings. Breeds in damp scrubland at high altitudes. Migratory range and habitats are unclear. Song said to be faster, more complex than that of the Blyth’s Reed Warbler.
识别特征
This species has the upper plumage and visible portions of wings and tail olive-brown while the underside is pale creamy with the underwing and axillaries paler.<p>The length is about 5 in (130 mm) with the tail being 2.3 in (58 mm) and the wing 2.4 in (61 mm) long. The tarsus is 0.85 in (22 mm) while the bill from gape is 0.8 in (20 mm). The first primary measures 0.35 in (8.9 mm) while the second is intermediate in length between the ninth and tenth. The closed tail appears graduated with the difference between the longest and shortest feathers being 0.4 in (10 mm). The type specimen was obtained in the Sutlej valley ("Sukedje valley") not far from Rampur.<p>The upper mandible is dark, but the cutting edges and entire lower mandible are pale. The tarsi, toes and claws appear pale brown. The hind claw is longer than in A. dumetorum. The tips of the tail feathers are pointed and more acutely lanceolate than in A. dumetorum or A. concinens. The primary tips are broad and rather squarer. Recent observers note that it has a habit of fanning out its tail open as it forages.<p>The specimens from Afghanistan and Kazakhstan suggest that they breed in Central Asia and moult indicates that they migrate along the Himalayas to winter in northern India and Southeast Asia. Sequence variation points to a stable or shrinking population structure.
分类信息
- 学名
- Acrocephalus orinus
- 命名信息
- Oberholser, 1905
- 目
- Passeriformes
- 科
- Acrocephalidae
- 属
- Acrocephalus
分布与栖息地
- 繁殖区
- OR : ne Afghanistan (Timmins et al. 2009)
- 非繁殖区
- n India and sc Thailand
- 迁徙
- Complete migrants
保护状况
- 种群趋势
- unknown
照片
分布
鸟叫声
其他鸟类

Southern Antpipit
Corythopis delalandi
Medium-sized odd-looking, ground-walking flycatcher of humid forests and second growth. Unmistakable in most of its range with its olive-brown back, yellow bill, white face and belly, and black breast. Told from Ringed Antpipit, for which there is barely any distributional overlap, by being paler and less olive above with a creamier chin and throat. Generally shy but its song is very distinct: a melodic series of explosive “preeeh-prrrwee-prurr-prii” notes. Also makes loud bill-snapping noises.

Crescent-chested Warbler
Oreothlypis superciliosa
Attractive, fairly common warbler of oak and pine-oak woods in highlands and foothills. Typically forages in leaf clusters and is usually seen at middle to upper levels in canopy, especially in oaks. Often associates with mixed-species feeding flocks of other warblers, vireos, titmice, and orioles, etc. Note the bold white eyebrow, lack of white wingbars, and the extensive yellow bib with a variable dark reddish crescent on the breast (can be almost absent on some immatures). Song is a cicada-like buzz.

Northern Black-Flycatcher
Melaenornis edolioides
A slim, long-tailed all-black flycatcher with a dark eye. Found in savanna, woodland, and cultivated areas. Single birds or pairs sit out on conspicuous perches, sometimes quite low. Very similar to Southern Black-Flycatcher, but there is virtually no overlap in range, and Northern lacks gloss in the black plumage. Distinguished from drongos by the slimmer bill and dark brown eye. Could be confused with certain black cuckooshrikes or boubous, but has a more vertical posture, and sits motionless for much longer periods. Not very vocal, but does have a pretty song of various trills, wheezes, and whistles given with long pauses between phrases.
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