Slate-throated Gnatcatcher
Polioptila schistaceigula
Uncommon from extreme eastern Panama to northwest Ecuador. Typical gnatcatcher shape: small and long-tailed. Male looks like it has been dipped head-first in soot, save for the contrasting white eye arcs and white belly. Female somewhat more similar to Tropical Gnatcatcher but note darker grayish head and breast with whitish cheek and narrow white eyebrow. Occurs locally in lowland forest, usually in the canopy. Singles or pairs often join mixed-species flocks.
识别特征
The slate-throated gnatcatcher is 10 to 11 cm (3.9 to 4.3 in) long and weighs approximately 6 g (0.21 oz). Its crown, the sides of the head, and the upperparts are slate gray, darker on the back. Its cheeks are whitish, its throat and breast sooty, and its belly and flanks white. Its tail is mostly black with some white on the outermost feathers. The sexes are alike.
分类信息
The slate-throated gnatcatcher is monotypic. It is apparently sister the Guianan gnatcatcher (Polioptila guaianensis) group and at one time it was suggested that they were conspecific.
- 学名
- Polioptila schistaceigula
- 命名信息
- Hartert, EJO, 1898
- 目
- Passeriformes
- 科
- Polioptilidae
- 属
- Polioptila
分布与栖息地
The slate-throated gnatcatcher is found from central and eastern Panama south through western Colombia into northwestern Ecuador. It inhabits humid primary forest, mature secondary forest, and their borders. In elevation it mostly ranges up to 750 m (2,460 ft).
- 迁徙
- Resident species
行为
The slate-throated gnatcatcher's diet is poorly known, but it is probably small arthropods like those of other Polioptila gnatcatchers. To feed it actively moves through the canopy and sub-canopy, and lower at the forest edges. It follows mixed-species foraging flocks singly or in pairs.<p>No information has been published about the slate-throated gnatcatcher's breeding phenology.<p>The slate-throated gnatcatcher's most frequent vocalization is "a short, rather faint, ascending trill, 'trrrrrrt'" [1]. It also has a nasal mewing call [2].
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Pale-throated Pampa-Finch
Embernagra longicauda
Large finch with a long spiky tail. Mostly gray with olive-green wings and tail. Note the bicolored bill (dark above and yellow-orange below) and the broken white eye-ring. Inhabits higher elevations, in dry scrub, rocky areas, and grassy fields with scattered palms. Sings a high, thin “tsi, tsoweee,” repeated continually.
Brown-winged Parrotbill
Suthora brunnea
Gregarious long-tailed inhabitant of grassy and scrubby areas, as well as bamboo stands and secondary growth, in mountains and foothills. Very similar in appearance to Vinous-throated Parrotbill (range overlap minimal) but with a brighter orange head, stronger and more noticeable throat streaking, and no warm orange or reddish tones in the wings. Moves about noisily through dense vegetation, twittering and chattering constantly.
Slaty-winged Foliage-gleaner
Neophilydor fuscipenne
Fairly small buffy-chestnut bird with dark grayish wings. The pale buffy eyering and eyebrow and bright rusty tail stand out. Sexes similar. Occurs from Panama to western Ecuador, in the understory and middle levels of foothill forest up to around 1,200 m. Usually seen singly or in pairs, following a mixed-species flock. Like other foliage-gleaners, often hitches along branches and probes into clusters of dead leaves. In range perhaps most similar to Scaly-throated Foliage-gleaner, but Slaty-winged is brighter buffy on the face and neck and has darker wings.
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