Fulvous-dotted Treerunner
Margarornis stellatus
A uniquely-marked little Furnariid. Very uncommon in restricted range on the west slope of the Andes in Colombia and Ecuador. Mostly bright orange-rufous with a dazzling white throat that bleeds down into bold speckles on upper breast. Singles or pairs forage with mixed-species flocks, usually hitching along mossy branches in the middle to upper levels. Occurs in humid mossy forest from around 1,200–2,200 m, typically at lower elevations than Pearled Treerunner.
识别特征
The star-chested treerunner is 13 to 15 cm (5.1 to 5.9 in) long and weighs 21 to 22 g (0.74 to 0.78 oz). The sexes have the same plumage. Adults have a wide but indistinct dull rufescent brownish supercilium, dull reddish brown ear coverts, and a more rufescent moustacial area. Their crown is dark reddish brown and their upperparts slightly paler. Their wing coverts are reddish brown, their primary coverts dark fuscous, and their flight feathers dark fuscous with dark rufescent edges. Their tail is dark reddish brown; the ends of the tail feathers lack barbs, giving a spiny appearance. Their throat is whitish. Their breast has a rufous-brown background; its upper part has a few rows of wide whitish spots with black surrounds and below them are several rows of smaller, more elongated black-edged white spots. The spots disappear by the lower breast. Their belly, flanks, and undertail coverts are plain rufous-brown. Their iris is dark brown, their maxilla horn to whitish horn with a browner base, their mandible horn, and their legs and feet grayish to brownish.
分类信息
- 学名
- Margarornis stellatus
- 命名信息
- Sclater, PL & Salvin, 1873
- 目
- Passeriformes
- 科
- Furnariidae
- 属
- Margarornis
分布与栖息地
The star-chested treerunner is found in Colombia's Western and Central Andes from Chocó and Antioquia departments and south into western Ecuador as far as Pichincha Province. There is also a single record further south in Chimborazo Province. It inhabits montane evergreen forest, where it favors areas heavy with moss and epiphytes. In elevation it ranges from 1,200 to 1,900 m (3,900 to 6,200 ft) in Ecuador and from 1,200 to 2,200 m (3,900 to 7,200 ft) in Colombia.
- 迁徙
- Resident species
行为
The star-chested treerunner is a year-round resident throughout its range.<p>The star-chested treerunner feeds on a variety of arthropods. It typically forages singly or in pairs, usually in mixed-species feeding flocks, and from the forest's mid-storey to its canopy. It acrobatically hitches up trunks and along limbs using its tail for support, and gleans prey from bark, moss, and epiphytes, often while hanging upside down.<p>The star-chested treerunner's breeding season spans at least February to April, but nothing else is known about its breeding biology.<p>Though both xeno-canto and the Cornell Lab of Ornithology's Macaulay Library have several recordings of star-chested treerunner vocalizations, the species' song has not been described in words.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Pintado Petrel
Daption capense
Fairly small and very distinctively patterned petrel of cool southern waters; regular migrant north to Humboldt Current. A “professional” ship follower in the Southern Ocean, often in groups that circle a vessel for hours. Extent of white spotting on upperparts rather variable, but no other petrel has this white-spattered or “painted” pattern; pintado means painted in Spanish and is also an anagram of the genus name, Daption.
Scaly-breasted Partridge
Tropicoperdix chloropus
A cryptically-colored ground-dweller without the bright colors and bold head patterns boasted by many of its relatives. Mottled brown overall with a grayish-white face and a speckled orange throat. Forages in dense undergrowth like other partridges, usually in mature foothill and lowland forest. Listen for its song, a series of ascending breathy whistles which culminate in an echoing series of ringing notes. As with many other forest gamebirds, very difficult to see in general; most likely encountered at staked-out blinds, or, if one is lucky, walking quietly along roadsides and clearings at dusk and dawn.
Olive-streaked Flycatcher
Mionectes olivaceus
Small, fruit-eating flycatcher found in lower to middle levels of humid forest. Most common in the mountains, but occasionally seen in lowland areas. Yellow belly, large spot behind eye, and streaky neck are all good ID features. Often seen following mixed species flocks, plucking berries from fruiting trees. Song is an incredibly high-pitched siren-like whistle that requires good hearing to be able to detect. Formerly treated as a subspecies of Olive-striped Flycatcher; note Olive-streaked Flycatcher’s limited range in Costa Rica and far western Panama.
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