Upland Antshrike
Thamnophilus aroyae
Small antshrike found in the Andes of Bolivia and adjacent areas of Peru near the border. Male is gray with white wingbars and pale eyes; female is brown with a gray face. Male is a bit similar to Variable Antshrike, but he is gray, not glossy black. Skulks in dense thickets at forest edge, where it is usually heard before being seen. Gives nasal caws, either alone or in a short series.
识别特征
The upland antshrike is 14.5 to 15 cm (5.7 to 5.9 in) long and weighs about 20 g (0.71 oz). Members of genus Thamnophilus are largish members of the antbird family; all have stout bills with a hook like those of true shrikes. This species exhibits significant sexual dimorphism. Adult males have medium gray upperparts with a blacker crown and a hidden white patch between their scapulars. Their wings are black or brownish black and their wing coverts have white tips. Their tail is black or brownish black with white tips on all but the central pair of feathers. Their underparts are a slightly paler gray than their upperparts. Adult females have a dark rufous crown and nape and a gray face with white streaks or spots. Their upperparts are dark olive-brown. Their underparts are tawny olive or tawny brown. Both sexes have a highly variable (from buffy white to brown) iris color, a black maxilla, a paler mandible, and gray or blue-gray legs and feet. Juvenile males are similar to adult females but have buff spots on their wing coverts and buff tips on their tail feathers.
分类信息
The upland antshrike is monotypic.
- 学名
- Thamnophilus aroyae
- 命名信息
- (Hellmayr, 1904)
- 目
- Passeriformes
- 科
- Thamnophilidae
- 属
- Thamnophilus
分布与栖息地
The upland antshrike is found in the Andean foothills from the Department of Puno in extreme southeastern Peru southeast to Cochabamba and western Santa Cruz departments in Bolivia. It inhabits the edges of humid montane forest, where it favors dense shrubby areas and vine tangles, and almost never penetrates far into the forest interior. It also occurs in newer regrowth in landslide scars and along roads. One publication states its elevational range as between 800 and 1,000 m (2,600 and 3,300 ft) in Peru and up to 1,700 m (5,600 ft) in Bolivia. Another states a wider range in Bolivia of 600 to 1,900 m (2,000 to 6,200 ft).
- 迁徙
- Resident species
行为
The upland antshrike is presumed to be a year-round resident throughout its range.<p>The upland antshrike's diet is not known in detail but is mostly insects. It usually forages singly or in pairs and infrequently joins mixed-species feeding flocks. It usually forages between 1.5 and 3 m (5 and 10 ft) above the ground but will feed as high as 6 m (20 ft). It gleans prey from leaves, stems, vines, and branches while perched and with short upward sallies. It also searches in clusters of dead leaves caught in vine tangles.<p>Nothing is known about the upland antshrike's breeding biology.<p>The upland antshrike's song is "a fast-paced, accelerating series of nasal notes, ending in a downslurred terminal note...wur wur-wur-wur-wur'rrrr". Its calls include "high whines; a drawn-out, modulated, throaty, descending caw aarrrr; and a mewing awww".
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Canivet's Emerald
Cynanthus canivetii
Small hummingbird of tropical lowlands, favoring forest edge and semi-open areas, often in relatively dry habitats. Usually feeds rather low, and often inconspicuous. Both sexes habitually pump their forked tail while hovering, unlike most other hummingbirds found in the same areas. Solidly emerald-green male is distinctive. Combination of small size, rather short straight bill, face pattern (whitish eyestripe and broad dark mask), and tail wagging behavior help ID the female. Also note the dry chattering call, which may suggest the call of Ruby-crowned Kinglet.
Red-collared Myzomela
Myzomela rosenbergii
A small honeyeater of montane forest. Male unmistakeable with a black hood, belly, wings and tail, and a bright red breast, back, rump and collar. Female mainly brown (olive green in some areas), with a black throat, and reduced red on the chest and rump. The only myzomela at high elevations, but co-occurs with other species at middle elevations. Males are distinctive, this is the only female myzomela with a red chest and rump. An energetic and variable song, including up-and-down “tweepy-tweepy-tweepy” phrases with slightly electronic-sounding notes.
Black-winged Pratincole
Glareola nordmanni
Similar to other pratincoles, the Black-winged Pratincole is an elegant shorebird of dry habitats, not necessarily mud. Very similar to Collared Pratincole, but in flight lacks whitish wing trailing edge seen on Collared and the underwing feathers are black not rufous. Note however, that both of these features may be very difficult to notice in the field, depending on light conditions. When standing its legs are longer and tail shorter, resulting in primary feathers projecting beyond the tail tip, but beware of Collared Pratincoles molting their elongated outer tail feathers. Flight call is very similar to Collared Pratincole, but slightly lower-pitched.
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。