Berlepsch's Canastero
Asthenes berlepschi
Short-tailed canastero endemic to the Sorata vicinity in northern Bolivia. Prefers montane scrub on hillsides, but occasionally near human development and open Polylepis forest. Very similar to Creamy-breasted Canastero, but note pale face and whitish breast. Song a series of notes starting with a dry sputter, then erupting into a high and emphatic descending series of squeaks that accelerates at the end.
识别特征
Berlepsch's canastero is 15 to 16 cm (5.9 to 6.3 in) long. Adults have an inconspicuous gray supercilium and blackish lores and ear coverts. Their crown is warm brown that becomes paler and duller on their back. Their rump and uppertail coverts are rufous. Their wings are mostly blackish with dark rufous edges and tips on their coverts. Their tail's outermost pair of feathers are rufous, the next pair partly rufous and partly blackish, and the rest fully blackish. Their throat, breast, and belly are creamy whitish, with the faintest hint of rufous in the center of the throat and faint dark scaling on the breast. Their flanks and undertail coverts are rufous. Their iris is brown, their maxilla dark, their mandible gray, and their legs and feet blue-gray. Juveniles have a more pronounced dark scaly pattern on the breast than adults.
分类信息
Several authors have suggested that Berlepsch's canastero should be treated as a subspecies of the rusty-vented canastero (A. dorbignyi) due to plumage similarities. A study with genetic data for many canasteros and other ovenbirds published in 2011 did not include Berlepshch's.<p>Berlepsch's canastero is monotypic.<p>The species' common name and specific epithet commemorate the German ornithologist and collector Hans von Berlepsch.
- 学名
- Asthenes berlepschi
- 命名信息
- (Hellmayr, 1917)
- 目
- Passeriformes
- 科
- Furnariidae
- 属
- Asthenes
分布与栖息地
Berlepsch's canastero is endemic to Bolivia. It is found only in the valley of the Consata River and its tributaries in north-central La Paz Department. It primarily inhabits semi-arid montane scrublands and frequently occurs in vegetation around pastures, farm, and human habitations. It has also been observed in Polylepis woodlands and Eucalyptus stands. In elevation it ranges between 2,300 and 3,700 m (7,500 and 12,100 ft).
- 迁徙
- Resident species
行为
Berlepsch's canastero is a year-round resident throughout its range.<p>Berlepsch's canastero's diet has not been detailed but is thought to be mostly arthropods. It forages singly or in pairs, apparently gleaning prey from the ground and low vegetation.<p>Berlepsch's canastero is thought to breed in the austral spring and summer. It builds a nest in a tree but nothing else is known about its breeding biology.<p>The song of Berlepsch's canastero is a trill that is similar to that of the rusty-vented canastero. That species' song "may begin with a series of introductory notes, but these apparently are not always given. The song then...accelerates and ascends, before descending and decelerating near the end".
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
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Oenanthe seebohmi
Small thrush-like bird with distinctive black-and-white tail pattern that is striking in flight. Breeding male has a black face, throat and wing, gray back and crown, and white underparts. Breeding female is duller, with a brownish crown and back, and usually a speckled blackish face and throat. Nonbreeding and immature birds are duller overall, though males retain their distinctive black throat. Breeds in the Atlas Mountains of northwest Africa, in areas of bare rock and short grass. Migrates south into the Sahel, where it spends the non-breeding season in a variety of open habitats such as grasslands and barren rocky plains. Tends to stay on the ground or on low perches. Jumbled-sounding song is quite variable, often including whistles, trills, and mimicry. Similar in appearance to Northern Wheatear, though male Atlas Wheatear is usually separated by its black throat. Separating females during migration and on the wintering grounds is usually difficult. Female Atlas Wheatear has a black “wingpit” and front part of the underwing, but this is hard to see in the field.
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Tachyeres brachypterus
A large and flightless, grayish, heavy-set duck. Adult males have a bright orange bill; in females and juveniles, the bill is olive-green. Very similar to Flying Steamer-duck, and not easily identified; look for shorter, stunted wings and tail and thicker neck and bill. Found along the coast, where it favors small rocky islands, as well as sheltered inlets and bays. Also inhabits coastal ponds, but doesn’t venture farther inland, unlike Flying Steamer-Duck.
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