Snow Partridge
Lerwa lerwa
A stone-colored terrestrial bird of stony hillsides, mountain ridges, and meadows above treeline. Adults speckled gray and white above, with dense rusty streaking on white underparts, red bill, and deep red legs. Usually forages in small groups, often in very exposed areas such as cliff sides and rocky ridges. Song, often given by multiple birds in a group simultaneously, is high-pitched and has a slippery, squeaky quality like wet shoes on tile; male song louder and ascending, female’s softer and descending.
识别特征
This partridge appears grey above and chestnut below with bright red bill and legs and the upperparts finely barred in black and white. In flight the pattern of dark brown primaries and secondaries with a narrow trailing white margin make them somewhat like the much larger Tibetan snowcock. The 14-feathered tail is dark and barred in white. There is variation in the shade and some birds have a nearly black crown. The primaries and secondaries are brown and the breast is deep chestnut. The abdomen has more white and the lower flanks and feathers around the vent are barred brown and white. The under-tail coverts are chestnut with black shaft streaks and white tips. Young birds have the lower parts mottled and the barring less distinct. The tarsus is feathered on the front of the leg half-way to the toes. <p>It measures 38–40 cm in length. Females weigh 450–580 g; males, 550–700 g. Sexes are similar in plumage, female lacks spurs on the tarsus while the male has a blunt spur and sometimes a second incipient spur. Downy chicks have a resemblance to the chicks of the blood pheasant. Chicks are born with the tarsi feathered and the nostril opening is covered by feathers.
分类信息
This species was first described by Brian Houghton Hodgson in 1833 and given the genus name Lerwa based on the Bhutia name for it in Nepal. Hodgson initially placed it in the genus Perdix calling it Perdix lerwa. A subspecies, L. l. major was described by Richard Meinertzhagen from Sichuan while L. l. callipygia from south Kansu was noted by Stegmann in 1938, but these are not usually recognized. The species has been retained in this monotypic genus due to various peculiarities including the tarsus feathering and the lack of clear sexual dimorphism in plumage. A species of bird louse, Chelopistes lervicola has been described as an ectoparasite of this species, and other species in this louse genus are known to parasitize the Cracidae, Meleagrididae and Odontophorinae of the New World.
- 学名
- Lerwa lerwa
- 命名信息
- (Hodgson, 1833)
- 目
- Galliformes
- 科
- Phasianidae
- 属
- Lerwa
分布与栖息地
Snow partridge is found in the Himalayas from Pakistan to Arunachal Pradesh along the higher ranges, mainly 3000 to 5000 m (rarely below 2000 m) altitude. It is found above the tree line but not on as bare and stony terrain as the snowcocks. Although said to be found in Afghanistan, there is no evidence. The species is found over a large area is generally considered to be of low conservation concern. It is hunted to some extent, due to its habit of being more approachable than snowcock and has declined in population in some areas.<p>The usual habitat is alpine pastures, open grassy hillsides with grass, lichens, moss, ferns and rhododendrons. Is found among small snow-patches but not in as stony or bare ground as the snowcock. The birds however are very local in their distribution.
- 迁徙
- Resident species
行为
The snow partridge is found is small groups, usually about 6 to 8 but up to 30 during the non-breeding season. When flushed, they usually fly up before scattering away with noisy wing beats. The flight is rapid and stirring. It has a habit of sunning itself on rocks during the midday. The call in the breeding season is said to resemble that of the grey francolin of the plains. It has been compared in habit to that of the ptarmigan. It is said to feed on mosses, lichens, berries, and the shoots of plants. It also swallows grit to aid digestion.<p>The breeding season is May to July. The males are believed to be monogynous. The nest is a scrape on a hill-side under some sheltering rock, either scratched out by themselves or already available, and usually hidden with vegetation. The nest is sometimes lined with moss but well concealed although given away by the male. About 3 to 5 eggs, pale yellow in color and slightly glossy with reddish-brown markings on the rounded end, are laid, and the female incubates while the male stands sentinel. Parent birds may use distraction displays to draw the attention of predators. They call in a comparatively softer lower note to the young, which respond with chicken-like cheep calls.<p>Apart from Chelopistes lervicola described as an ectoparasite of this species, an Argasid tick Argas himalayensis has been noted.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Cape Grassbird
Sphenoeacus afer
A chunky, streak-backed warbler with a rusty head and wings, a ragged rufous tail, and black moustache stripes. It avoids woodland and trees, preferring rank areas with long grass, scrubby edge, and wet heathland (fynbos). It hops and clambers through dense brush and thickets, then flies low on rapidly-beating wings in labored flight to the next bush, immediately diving into cover. But it will also perch on prominent tall shrubs, like proteas, and sing its melodious tinkling jumbled song that starts softly and gets progressively louder. It also has a distinctive flat mewing “meeeeep” call. The Moustached Grass-Warbler is similar to the Cape Grassbird, but it has a plain unstreaked back, a broad black tail, and a pale eye.
Flores Shortwing
Brachypteryx floris
An elusive, small songster of dense montane forest undergrowth on Flores. Male has dull blue-gray upperparts with paler gray chest and sides. Female has warm brown upperparts with more rufous on the wings, rump, and pale rufous under the tail. Both sexes have white throat and mid-belly, and a thin, white eyebrow. Female similar to Lesser Shortwing, but Flores has a gray chest. Song is a jumble of whistles and scratchy notes. Also gives a loud “tak!” call.
Rufous-collared Kingfisher
Actenoides concretus
Brilliantly colored but often elusive and difficult to spot in the gloom of the forest. Male is bright blue above and orange below with a green cap. Female replaces male’s blue with cream-spotted green. Broad black, blue, and orange stripes across the face distinguish this species from other kingfishers in range. Whistles pleasantly and persistently, often while perched low above the forest floor in shaded areas.
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