Bolivian Spinetail
Cranioleuca henricae
Large arboreal spinetail restricted to the upper Cotacajes river valley in NW Bolivia, where primarily known from the Inquisivi area in open woodland near treeline. From the similar Ash-browed Spinetail by whitish breast and pale nape. Song a very high, accelerating series of about 20 squeaks given over ~1.5 seconds that drops slightly in pitch over the course of the song.
识别特征
The Bolivian spinetail is 14.5 to 15 cm (5.7 to 5.9 in) long. The sexes have the same plumage. Adults have a white supercilium and dirty white lores with black tips on an otherwise gray face. Their crown is rufous with buff and gray speckles on the forecrown. Their nape and back are light brownish olive, their rump tawny olive, and their uppertail coverts cinnamon brown. Their tail is rufous with a faint dusky wash on the innermost pair of feathers. Their wings are rufous with grayish brown inner webs on the primary coverts and fuscous tips to the flight feathers. Their chin and upper throat are dirty white and the rest of their underparts are light grayish olive with a faint buff tinge. Their iris is warm brown, their bill pink with a sooty tip to the mandible, and their legs and feet olive yellow or olivaceous. What is thought to be a juvenile had a crown the same color as the adult's back and a less distinct supercilium.
分类信息
The Bolivian spinetail was discovered in 1993 near Inquisivi, in the department of La Paz, and formally described in 1997. Maijer and Fjeldså hypothesized that it is related to the line-cheeked spinetail (C. antisiensis), creamy-crested spinetail (C. albicapilla), olive spinetail (C. obsoleta), pallid spinetail (C. pallida), and stripe-crowned spinetail (C. pyrrhophia). Later phylogenetic data confirmed that all of these except the line-cheeked are closely related to the Bolivian spinetail.<p>The Bolivian spinetail is monotypic.
- 学名
- Cranioleuca henricae
- 命名信息
- Maijer & Fjeldså, 1997
- 目
- Passeriformes
- 科
- Furnariidae
- 属
- Cranioleuca
分布与栖息地
The Bolivian spinetail is found only in a few valleys in Bolivia's northern and central Andes. Documented and sight records have come from a few locations in the departments of La Paz and Cochabamba. It inhabits deciduous forest, sometimes with columnar cacti and low bushes, and sometimes epiphytic lichens and Tillandsia on the trees. In elevation it is known to range between 1,600 and 2,300 m (5,200 and 7,500 ft) and might occur as high as 3,300 m (10,800 ft).
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: declining.
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Forest Thrush
Turdus lherminieri
An uncommon robin-shaped inhabitant of moist forests where it is usually found feeding on insects and fruits. Its rich gray-brown upperparts and head, combined with bold scaly underparts make it unmistakable within its range. The call is a loud smack. Sings a variety of whistles and other sounds, often uttered in distinct phrases usually from a concealed mid-level perch.
Eungella Honeyeater
Bolemoreus hindwoodi
Medium-sized honeyeater recorded at higher elevations in the ranges behind Mackay in central Queensland. Gray overall; underparts slightly paler, with fine streaks on chest difficult to see. Dark cheeks split by a thin white gape mark that wraps back under and behind the bluish eye; also has a faint, narrow neck plume. Call is a series of sharp, frantic-sounding whistles.
Pygmy Swiftlet
Collocalia troglodytes
A tiny, common swiftlet found over lowland forest. Gray below with a paler belly, a darker throat, and dark patches on the underside of the base of the forewing. Black above with a distinctive white band on the rump. Tail square, and dark under the base. Nests in caves, where it uses echolocation. Similar to Gray-rumped Swiftlet, but Pygmy is slightly smaller, with a cleaner white rump band. Gives grating calls in flight.
开始您的观鸟之旅
在户外识别鸟类，并在下一次观察时随手查阅鸟类图鉴。