Silvery-fronted Tapaculo
Scytalopus argentifrons
Tapaculos are small, plump, short-tailed, mostly gray birds that are as sneaky as mice. Silvery-fronted is the only tapaculo in its range, and the male has a distinctive whitish eyebrow. Also look for browner flanks with dark bars. Females don’t have the white eyebrow but are still distinctive in range because of the overall dark color and extremely furtive habits. Rarely seen well; stays on or near the ground in the forest understory. Listen for the song: a series of chips starting off fast, gradually getting slower and louder.
识别特征
The silvery-fronted tapaculo is 11 cm (4.3 in) long and weighs 17 g (0.60 oz). The male of the nominate subspecies is mostly sooty black; the lower breast and belly are paler. The flanks and crissum (the area around the cloaca) are brownish red. It has a silvery forehead (the "front") and a white supercilium. The male Chiriqui is darker with a less prominent supercilium. The females of both subspecies do not have a supercilium; their upper parts are dark brown, the throat and breast are dark gray, the belly blackish, and the flanks and crissum brighter brownish red than the male's. The juvenile is similar to the female but darker with brown "scales" on the underparts.
分类信息
The silvery-fronted tapaculo has two subspecies, the nominate "silvery-fronted" Scytalopus argentifrons argentifrons and the "Chiriqui" S. a. chiriquensis. The Chiriqui subspecies has at times been considered a separate species.
- 学名
- Scytalopus argentifrons
- 命名信息
- Ridgway, 1891
- 目
- Passeriformes
- 科
- Rhinocryptidae
- 属
- Scytalopus
分布与栖息地
The silvery-fronted tapaculo is the only member of its family whose entire range is in Central America. (The Tacarcuna tapaculo, S. panamensis, is found in far southern Panama and Colombia.) It inhabits the Talamancan montane forests at elevations of 1,000 to 3,000 m (3,300 to 9,800 ft). The Chiriqui subspecies is found only in western Panama. The nominate S. a. argentifrons has the wider range, from western Panama north through Costa Rica almost to the border with Nicaragua. If frequents thickets and bamboo in the undergrowth of humid primary forest and secondary forest, especially in ravines and along streams.
- 迁徙
- Resident species
行为
The silvery-fronted tapaculo forages for insects and other arthropods while creeping and hopping along the ground.<p>The silvery-fronted tapaculo's breeding phenology has not been described.<p>The silvery-fronted tapaculo's song is a series of notes that slow but get louder during its five to 10 second duration [1]. Its call is similar but shorter [2].
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Rufous-fronted Thornbird
Phacellodomus rufifrons
A rather plain thornbird with a long tail and a dark gray eye. Nondescript; look for the brighter rufous forehead that contrasts with an otherwise plain olive-brown back and buff underparts. Found in open areas with scattered trees and savannas; avoids the forest interior. Tends to be very vocal, often singing a squeaky, chattering duet. Look for its enormous stick nests usually located in isolated trees where they hang suspended at the end of branches. Mainly occurs from Bolivia to eastern Brazil, with a disjunct population in northwestern Peru and extreme southern Ecuador.
Rusty-margined Guan
Penelope superciliaris
Medium-sized long-tailed guan with a red throat wattle and pale legs. Occurs in various wooded habitats from dense humid forests to dry forests and mangroves. Unlike other guans has an indistinct eyebrow streak and a plain rather than streaked back. Prominent white streaks on the neck extend to the lower breast. Makes a harsh barked “wruh, wruh.”
Rainbow Starfrontlet
Coeligena iris
Large and spectacular hummingbird found in the Andes of southern Ecuador and northern Peru. Plumage varies geographically, but all birds have bright chestnut on lower back, tail, belly, and wings, along with a green breast. Crown color ranges from rusty at the northern limit of its range to glittering green and blue farther south. Throat patch may be purple or blue and varies in size. Also note rather long bill. Female is duller than male and lacks throat patch and iridescence. Inhabits montane forest and scrub, and occasionally visits feeders.
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