Rufous-vented Grass Babbler
Laticilla burnesii
Specialized, slender prinia-like babbler. Restricted to lowland grassy riverine plains, where it typically stays low in the vegetation in small flocks, flushing only reluctantly. If seen, note very long tail, white throat, and streaking all over the body. Shy and difficult to see; more readily detected by its bubby, warbling song.
识别特征
Rufous-vented grass babblers average 17 cm (6.7 in) long with a wing length from the bend to the tip of 5.3 cm (2.1 in) (females) or 5.5 cm (2.2 in) (males) to 5.9 cm (2.3 in). Adults are a cool brown colour above except that a buffy region on the back of the neck and upper back forms a distinct collar. Bold dark streaking starts at the forehead and fades on the back. The underparts are whitish with a tawny hue and dark streaking on the flanks. The undertail coverts are bright rufous or chestnut. 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 rufous tips. The tail is long 8.7 to 11.5 cm (3.4 to 4.5 in) 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 rufous 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
The rufous-vented grass babbler was described by the English zoologist Edward Blyth in 1844 under the binomial name Eurycercus burnesii. It is named after Alexander Burnes.<p>Two subspecies are recognised:
- 学名
- Laticilla burnesii
- 命名信息
- (Blyth, 1844)
- 目
- Passeriformes
- 科
- Cisticolidae
- 属
- Laticilla
分布与栖息地
As treated here, this bird is found only in the plains of the Indus in Pakistan and adjacent in Punjab (India). (However, the swamp grass babbler of Assam and Bangladesh is often combined with this species.) It inhabits a variety of long grasslands, notably plains of sarkhan (Saccharum) but also plains of elephant grass and ekra grass, sometimes where mixed with acacias and tamarisks. It can even occur in deserts with scattered patches of tall grass, and reedbeds. It prefers the vicinity of large rivers and their tributaries or swamps.
- 迁徙
- Resident species
行为
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
Jamaican Oriole
Icterus leucopteryx
A fruit-loving inhabitant of woodlands and gardens. Adult is yellow (often tinged green or orange), sports a black beard, and has very large white wing patches covering half of the otherwise black wing. Immatures look similar, but they have two broad white wingbars instead of a white patch. Immature male Orchard Oriole looks somewhat similar, but it is smaller and lacks the bold white wing markings seen on Jamaican Orioles. Songs include a rapid series of rich, whistled, and mostly down-slurred phrases and “cheat-you, cheat-you, cheat-you, cheat-you, cheat.”
Venezuelan Troupial
Icterus icterus
A brilliant and brash resident of thornscrub, cactus forests and other arid landscapes. Rather large-headed, often sporting a short shaggy crest, with a blue teardrop of bare skin around each eye, thus differing from most other orioles. Also note the long white slash on each wing. The Baltimore Oriole is passingly similar, but it is smaller, less bulky, and has less black on the chest than Venezuelan Troupial. Vocalizations are mostly loud and flutelike. They include an upward inflected “chu-wee,” a down slurred “shee-oo,” a quick series “thank-you, thank-you, thank-you, chu-eee, che-ee, chu-ee,” and “Chu-oo-eee-o.”
Fire-throated Flowerpecker
Dicaeum luzoniense
Tiny songbird of montane forests in the Philippines, where it is found on Luzon, Mindanao, and the Western Visayas. Adult male is dark blue above and pale creamy white below, with a black stripe leading down the belly from a brilliantly red patch like a bloodstain on the breast and lower throat. Female is much plainer, brownish-olive above and pale buff below; compare with Pygmy Flowerpecker, which has a bicolored and more slender downcurved bill. Often forages at flowers blooming in the canopy. Gives a thin, high-pitched “tsee’ee”, as well as a short, high-pitched series with a similar cadence. Formerly treated as a subspecies of Fire-breasted Flowerpecker.
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