Junin Canastero
Asthenes virgata
Chunky, streaked brown bird with a long tail that is often held cocked. Warm reddish brown with extensive white streaking through its head, back, and sides. Forages on or near the ground in open, high-elevation habitats, often with tall bunches of grass; occasionally found around the treeline or the edges of Polylepis forests. Compared to the similar Line-fronted Canastero found in more heavily vegetated habitats, Junin Canastero is larger with a streaked back, a thicker bill, and a paler white breast with more diffuse streaking.
识别特征
The Junin canastero is about 17.5 to 18 cm (6.9 to 7.1 in) long; one speciment weighed 22 g (0.78 oz). The sexes have the same plumage. Adults have a narrow buff supercilium on an otherwise ochraceous brown face. Their crown is black with orange brown streaks. Their nape and upper back are black with pale buff streaks. Their lower back, rump, and uppertail coverts are medium brown or olive brown with black and buff streaks. Their wing coverts are olive brown with black and buff streaks. Their outer flight feathers are rufous with reddish brown edges and the inner ones dusky brown with olive brown edges; all have dusky tips. Their central pair of tail feathers are dusky brown, the next pair have dusky brown inner webs and rufous outer webs with dusky edges, and the other three pairs are rufous with a black line on the outer web and black and dusky mottling on the inner web. Their chin is ochraceous buff. Their breast and belly are pale creamy brown with faint tawny olive streaks on the breast. Their flanks are tawny olive with buffy white streaks and their vent area is tawny. Their iris is dark brown, their maxilla horn, their mandible grayish pink, and their legs and feet olive.
分类信息
The Junin canastero is monotypic. It and the scribble-tailed canastero (A. maculicauda) have at times been suggested as subspecies of the many-striped canastero (A. flammulata). Genetic data show the three to be separate but closely related sister species. In central Peru the Junin canastero's range slightly overlaps that of the many-striped canastero, and hybrids of the two species are known from that zone.
- 学名
- Asthenes virgata
- 命名信息
- (Sclater, PL, 1874)
- 目
- Passeriformes
- 科
- Furnariidae
- 属
- Asthenes
分布与栖息地
The Junin canastero has a disjunct distribution in central and southern Peru. It is found where the departments of Junín, Pasco, and Lima meet and also from Ayacucho department through Cuzco and Apurímac departments slightly into Puno department. There are scattered sightings between these two population centers.<p>The Junin canastero primarily inhabits humid landscapes with tall bunch grass, sometimes those with scattered bushes and near stands of polylepis. It also sometimes occurs in rocky areas of bunchgrass without bushes or trees. In elevation it ranges between 3,300 and 4,600 m (10,800 and 15,100 ft).
- 迁徙
- Resident species
行为
The Junin canastero is a year-round resident throughout its range.<p>The Junin canastero's diet has not been studied; it is assumed to be mostly or entirely arthropods. It usually forages singly or in pairs, and mostly on the ground.<p>Nothing is known about the Junin canastero's breeding biology.<p>The Junin canastero's song is "a dry, accelerating, descending trill sometimes with a stuttering quality: tzree-tzree-tzree'ti'ti'ti'ti-ti'ti'ti-ti'ti'ti-ti'ti'tu". Its calls include "a 'mewing ... tuuuiit' and, in alarm, a complaining eek".
保护状况
- 种群趋势
- unknown
照片
分布
鸟叫声
其他鸟类
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Tarsiger indicus
Small, furtive, ground-dwelling songbird with thin white eyebrow. Adult males are slaty above and dusky ochre below, with a bright white eyebrow. Female is duller and browner overall, with a thinner eyebrow. Breeds in montane forests, favoring areas with a dense brushy understory, such as dwarf bamboo or Rhododendron. Descends into foothills during the winter, generally in similarly dense habitats. Song is a short burst of pleasant warbled notes, and calls include a rising and mellow “wheet.”
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Small and distinctive warbler-like bird, often difficult to see well. The male has a black head with contrasting white eyebrows and throat, gray upperparts, and striking pinkish-red underparts. The female has a buffy face, chest, and undertail coverts, whitish belly, and gray upperparts. Prefers canopy vine tangles and river edges, where it may occur lower; creeps through vegetation, alone or with mixed-species flocks, feeding on insects. Generally uncommon and inconspicuous. Plumage is unlike any other species in range. Song is a series of soft, rising whistles.
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Range-restricted antwren of the Serra do Sincorá. Males are brown above and black below, with a white eye-line that stretches down to the underparts. Females have black underparts streaked with white. Found in low scrub and grasslands in rocky areas. The song is a continuous repetition of high, slow “tjew” notes. The similar but more widespread Rusty-backed Antwren has a rufous back and a different song.
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