Swamp Grass Babbler
Laticilla cinerascens
Slender, prinia-like babbler restricted to the Brahmaputra floodplains of far northeastern India and northern Bangladesh. Streaked gray-brown above and white below with faint white eye-arcs and a long tail. Shy, keeping to deep beds of tall grasses, especially elephant grass, on river plains, where it is most easily detected by its fluid warbling song.
识别特征
Swamp grass babblers average 17 cm (6.7 in) long (big for a prinia). Adults are olive-grey above, slightly warmer on the back of the neck and upper back, but less distinctly collared than the rufous-vented grass babbler. Bold dark streaking starts at the forehead and fades on the back. The underparts are greyish white, greyer on the flanks, which may be slightly streaked. There is a faint buff tint to the undertail coverts (but not the distinctive colouring for which the rufous-vented prinia is named). The upper surface of the wings has barring formed by the covert feathers and their paler fringes. The wing linings are a faintly tawny off-white. The flight feathers of the wings are greyish brown; when the wing is folded, the primaries barely extend beyond the tertials. Those of the tail may be greyish or olive-brown and have tawny tips. The tail is long and strongly graduated, that is, the outermost pair of feathers is only one-third as long as the central pair. The head shows a conspicuous white eye-ring, whitish lores, and dark-streaked whitish cheeks.<p>The upper mandible is horn-brown; the lower, straw-brown or flesh-brown. The eyes are brown, varying a little in lightness. The legs are flesh-colored or pale brown.<p>From July to September the plumage is worn, especially the tail, which may be much shorter than in fresh plumage and missing the tawny tips. The moult is usually complete by October.<p>Juveniles are similar but have loose, fluffy plumage. They have little or no streaking on the back and their tail tips are rufous, not tawny. They molt into adult head and body plumage, retaining their flight feathers, about 4 to 6 weeks after fledging.<p>Calls include "a wheezy feez, and a quiet, very rapid nasal rattle." The song is described as a warble about 4 seconds long, liquid and loud, comparable to that of a dunnock.
分类信息
Some authorities lump it as a subspecies, L. burnesii cinerascens, of the rufous-vented grass babbler. Here it is treated as a separate species following the Handbook of the Birds of the World and Clements.
- 学名
- Laticilla cinerascens
- 命名信息
- (Walden, 1874)
- 目
- Passeriformes
- 科
- Leiothrichidae
- 属
- Laticilla
分布与栖息地
- 迁徙
- Resident species
行为
Like the rufous-vented grass babbler, this species skulks low in grass tussocks, hopping and threading its way through, often in small groups, feeding on insects. It usually holds its tail slightly cocked. When it flies, something that is hard to cause, it goes only to a nearby tussock. It is easiest to find in the breeding season, when it sings in the mornings and evenings.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Streaked Berrypecker
Melanocharis striativentris
A fairly small, rare bird of mid-montane forest interior. Mainly olive color with some streaking on the underparts, an indistinct, broad eye-ring and orange around the base of the bill. Forages for fruit in the midstory where it is inconspicuous. Normally occurs above the level of Black and Obscure Berrypeckers and is stockier and shorter tailed than Mid-mountain and Fan-tailed. It is the only berrypecker to have streaking on the underparts. Voice, a harsh, scratchy call.
Philippine Nightjar
Caprimulgus manillensis
A medium-sized night bird of forest and open areas from the lowlands to the mountains. Heavily patterned in various shades of brown, with finely barred underparts, blotching on the chest, and dark wings with large pinkish and white spots and a broad pale bar bordered with black. Note the white lines on the side of the throat with a black line below, and the broad white band on the end of the undertail. Voice is a distinctive, loud two-noted “pyok prraw,” the second note slightly lower and with a vibrating quality.
Short-tailed Parrot
Graydidascalus brachyurus
Medium-sized, uniformly bright green parrot with a short tail. Note the indistinct black eye-line, the dusky bill, and the darker green flight feathers; other parrots have more colorful plumage and longer tails. Inhabits seasonally flooded forest along large rivers, occasionally venturing into adjacent urban areas.
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