Canyon Canastero
Asthenes pudibunda
Fairly common but local and easily overlooked in the Andes, mainly in canyons and on rocky slopes with fairly dense bushes and scrub. Usually rather skulking; keeps low in bushes and creeps in vegetation, but often sings from atop a bush. Plumage rather plain but relatively dark brownish above with chestnut wings and a dark-centered chestnut tail. Compare with Cordilleran Canastero, of more open habitats; also note differences in song and calls.
识别特征
The canyon canastero is 15 to 17 cm (5.9 to 6.7 in) long and weighs 13 to 17 g (0.46 to 0.60 oz). The sexes have the same plumage. Adults of the nominate subspecies have a thin buff supercilium and dark brownish lores on an otherwise gray-brown face. Their crown is warm dark brown and their back and rump a slightly paler brown. Their wings are dull reddish brown. Their uppertail coverts are chestnut-rufous and their tail a more rufous brown than the back. Their chin and upper throat are pale tawny-orange, their lower throat and upper breast light gray-brown with faint paler streaks, their lower breast and belly unstreaked pale gray-brown, and their flanks and undertail coverts dull rufescent brown. Their iris is brown, their maxilla black to dark horn, their mandible gray to pinkish horn with a blackish tip, and their legs and feet gray to blackish. Juveniles' chin and throat are light gray-brown, their breast has faint dark bars, and their underparts have a brownish wash. Subspecies A. p. neglecta has a darker back than the nominate, a more chestnut chin and throat, and darker and browner underparts. A. p. grisior is paler than the nominate with slightly grayer underparts and slightly less rufescent flanks.
分类信息
The canyon canastero has three subspecies, the nominate A. p. pudibunda (Sclater, 1874), A. p. neglecta (Cory, 1916), and A. p. grisior (Koepcke, M., 1961). Some authors have treated the rusty-fronted canastero (A. ottonis) and maquis canastero (A. heterura) as subspecies of the canyon canastero and others have treated the three as a superspecies. However, genetic data show that the canyon canastero is most closely related to the Vilcabamba thistletail (A. vilcabambae).
- 学名
- Asthenes pudibunda
- 命名信息
- (Sclater, PL, 1874)
- 目
- Passeriformes
- 科
- Furnariidae
- 属
- Asthenes
分布与栖息地
The canyon canastero is a bird of the western slope of the Andes. Subspecies A. p. neglecta is the northernmost; it is found in the northwestern Peruvian departments of La Libertad and Ancash. The nominate subspecies is found in the western Peruvian Department of Lima. A. p. grisior is found from the Department of Huancavelica in southwestern Peru south into Chile as far as the Tarapacá Region. The species primarily inhabits rocky areas in arid montane scrublands, often in ravines, and occasionally occurs in Polylepis woodland. In elevation it mostly ranges between 2,400 and 3,700 m (7,900 and 12,100 ft) but is found as high as 4,000 m (13,000 ft).
- 迁徙
- Resident species
行为
The canyon canastero is a year-round resident throughout its range.<p>The canyon canastero feeds on arthropods. It usually forages singly or in pairs, gleaning prey from low branches and the ground, usually in areas shaded by rocks or bushes.<p>The canyon canastero's breeding season has not been definded but includes May. Nothing else is known about its breeding biology.<p>The canyon canastero's song is "a loud, accelerating trill with a few introductory notes". Its call is a repeated "kee-whit".
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Chucao Tapaculo
Scelorchilus rubecula
Fairly common to common in native temperate forest, adjacent shrubbery, wooded patches, and thickets along rivers and streams, especially with bamboo. Loud ringing song is commonly heard, but calling birds can be elusive. At other times can be confiding, walking out at close range as if curious, usually with tail cocked. Plumage distinctive, with bright rusty eyebrow, throat, and breast. Compare with the larger and fatter Chestnut-throated Huet-huet.
Rufous-fronted Antthrush
Formicarius rufifrons
Range-restricted antthrush of river’s-edge habitats and bamboo. Grayish brown, with an orange forehead. Found in successional forest with dense understory, including areas with bamboo or dense heliconia thickets. Listen for its song, a long, rising-falling series of musical whistles. Voice is similar to the slower song of Buff-throated Woodcreeper, but ascends faster in the middle of the song.
Red-crested Bustard
Lophotis ruficrista
A medium-sized, black-bellied bustard with diagnostic white chevrons on a brown-and-black mottled back. The male has a brown-gray neck and slaty cap, and the female is plainer. The name is misleading, as the red crest is almost always hidden. It walks slowly and steadily in arid woodlands, where it is common but due to its camouflage often avoids detection. The song is a sequence of clicking “tic-tic” notes that are followed by a mournful piping “sweee-swee-sweee sweet” series that accelerates to a crescendo. The male indulges in an absurd display in which he flies nearly vertically into the sky and then folds his wings and somersaults down as if shot, only to unbelievably land on his feet. In flight the Red-crested Bustard’s all-black underwings differentiate it from Black-bellied Bustard, which has white windows in the underwing.
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