White-sided Hillstar
Oreotrochilus leucopleurus
Small hummingbird of the Andes from southern Bolivia through Argentina into central Chile; found in rocky and shrubby valleys, villages, and any open or semiopen areas with flowers. Often builds nest under eaves of buildings or bridges: a bulky cup of plant material and wool to insulate against cold nights. Fairly common. Readily identified in most of range by extensively white tail. Male has an emerald green gorget and a broad blue-black stripe on belly. Female is rather drab, but note slightly decurved bill, spotted throat, and tail pattern.
识别特征
The white-sided hillstar is 13 to 15 cm (5.1 to 5.9 in) long and weighs 7.9 to 8.4 g (0.28 to 0.30 oz). Adults have a medium length slightly decurved black bill. The adult male has drab brown upperparts. It has a shiny green gorget with a black border that separates it from the white breast and belly. The belly has a wide blue-black stripe down its middle into the vent area. The somewhat rounded tail is bronzy black and its outer feathers have white at the base. The female is also dull brown above, and below as well. Its throat is pale with fine dark speckles. The tail is greenish black and the outer three or four pairs of feathers have much white at the bases and tips. The juvenile is overall more grayish than the adult and the male has a dark blue-green gorget.
分类信息
The white-sided hillstar was at one time proposed to be a subspecies of Andean hillstar (Oreotrochilus estella) but major taxonomies retain it as a species. It is monotypic.
- 学名
- Oreotrochilus leucopleurus
- 命名信息
- Gould, 1847
- 目
- Apodiformes
- 科
- Trochilidae
- 属
- Oreotrochilus
分布与栖息地
The white-sided hillstar is found in the Andes from central Bolivia's Cochabamba Department south through Chile to the Biobío Region and Argentina as far south as Santa Cruz Province. It inhabits puna grasslands with dwarf shrubs, cacti, and Puya. In elevation it generally ranges from 1,200 to 4,000 m (3,900 to 13,100 ft) but may go higher even to the snow line.
- 迁徙
- Resident species
行为
The white-sided hillstar mostly leaves Chile during the Austral winter but some individuals simply move to lower elevations. There might also be some late winter or early spring movement further north than Cochabamba in Bolivia.<p>The diet and feeding strategy of the white-sided hillstar are not well known but are believed to be similar to those of the closely related Andean hillstar. That species feeds on nectar at a variety of flowering shrubs, cacti, and trees, and perches to feed rather than hovering. It also gleans arthropods from vegetation and sometimes catches them on the wing.<p>The white-sided hillstar breeds in November and December. It glues its large cup nest to a vertical rock face in a well-protected spot. The clutch size is two eggs. Little else is known about the species' breeding phenology.<p>The white-sided hillstar's vocalizations are not well known. It does make "a repeated short 'tsit'" call and also "a fast twittering during chasing or display".
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Stub-tailed Spadebill
Platyrinchus cancrominus
Tiny ‘cute’ flycatcher found in fairly open but shady understory of tropical lowland forest, mainly in humid areas. Appearance is distinctive, with brownish upperparts, striking face pattern, and stubby tail. Can be quite common but easily overlooked. Usually draws attention by its bright, nasal chi-dik or chi-di-dik call, usually given just after a short flight, after which it sits still and is frustratingly difficult to see.
Bare-shanked Screech-Owl
Megascops clarkii
Large for a screech-owl. Warm rufous-brown overall, brightest on face, which does not have a distinct black border like most other screech-owls. Coarsely marked on belly. Found in montane forests, where the best way to find it is by voice. Listen for the short series of hoots.
African Palm Swift
Cypsiurus parvus
A very slender gray-brown swift with a long, deeply forked tail that is often held closed, making it look needle-like and pointed. The erratic flight pattern, with frequent direction changes and rapid wingbeats on long, scythe-shaped wings, is distinctive. Less gregarious than other swifts; usually found in pairs or small flocks, and association with other swallows and swifts is usually only fleeting. Forages over a wide variety of habitats with palms, including savanna, coastal scrub, towns, villages, cultivated areas, forest edge, and clearings, from sea level up to 1800 meters of elevation, preferring lowlands. Nests and roosts in palms and uses its tiny legs with hook-like claws to cling to the undersides of fronds. Gives a high-pitched, metallic “tre-tit-tit-tit-tit-tit-tit-tit” call, solitarily or in unison with others. Separated from other swifts by its longer and thinner tail.
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