Chestnut-winged Foliage-gleaner
Dendroma erythroptera
Gray-brown foliage-gleaner with reddish wings and tail. Face and throat washed with dull yellow, with a faint eyeline; this is unlike many other foliage-gleaners which have a clear eyebrow or throat patch. Usually forages fairly high in the midstory and canopy of mature rainforest, often with mixed species flocks. Many foliage-gleaners have reddish wings; look for reddish wings contrasting with grayish body and tawny ochraceous face and throat in this species.
识别特征
The chestnut-winged foliage-gleaner is 17 to 19 cm (6.7 to 7.5 in) long and weighs 28 to 36 g (0.99 to 1.3 oz). It is a largish furnariid. The sexes have the same plumage. Adults of the nominate subspecies have a wide tawny eyering, an indistinct tawny supercilium that narrows past the eye, a dark gray area behind the eye, brownish lores, dull brownish ear coverts, and ochraceous yellow malars. Their crown is dull brownish gray with buff streaks. Their back and rump are dull grayish brown and their uppertail coverts are slightly paler. Their wing coverts are rufous with black streaks, their primary coverts dark chestnut, and their flight feathers darkish rufous with dark fuscous tips. Their tail is dark rufous. Their throat is ochraceous yellow and their breast light brownish with indistinct ochraceous tawny streaks that fade to their slightly paler belly. Their flanks and undertail coverts are light grayish brown. Their iris is brown to dark brown, their maxilla dark brown to brownish, their mandible greenish horn to yellowish green, and their legs and feet yellowish green to light greenish olive. Juveniles are slightly paler and duller overall than adults, with a darker throat and few or no streaks on their underparts. Subspecies D. e. diluvialis has browner (less grayish) upperparts than the nominate, a much more buffy breast, and browner flanks and undertail coverts.
分类信息
The chestnut-winged foliage-gleaner's taxonomy is unsettled. The International Ornithological Committee (IOC) and the Clements taxonomy follow the conclusions of a 2011 publication that moved the species from genus Philydor to Dendroma. BirdLife International's Handbook of the Birds of the World (HBW) retains it in Philydor.<p>According to the IOC and Clements, the chestnut-winged foliage-gleaner shares genus Dendroma with the buff-fronted foliage-gleaner (D. rufa), and they and the chestnut-winged hookbill (Ancistrops strigilatus) are sister species. HBW retains the buff-fronted foliage-gleaner in genus Philydor with the chestnut-winged and several other foliage-gleaner species, and does not agree with the above sister species treatment.<p>The three taxonomic systems agree with assigning two subspecies to the buff-fronted foliage-gleaner, here listed using genus Dendroma. (HBW retains the neuter spellings of the specific epithets instead of the feminine ones required by Dendroma.) They are the nominate subspecies D. e. erythroptera (Sclater, PL, 1856) and D. e. diluvialis (Griscom & Greenway Jr., 1937).
- 学名
- Dendroma erythroptera
- 命名信息
- (Sclater, PL, 1856)
- 目
- Passeriformes
- 科
- Dendrocolaptidae
- 属
- Dendroma
分布与栖息地
The nominate subspecies of the chestnut-winged foliage-gleaner is found from southeastern Colombia south through eastern Ecuador and eastern Peru into northeastern Bolivia and east in Brazil south of the Amazon to the Rio Madeira. It also has a separate smaller range in southern Venezuela's Amazonas and Bolívar states. D. e. diluvialis is found further east, in the Brazilian states of Pará and Maranhão. The species inhabits tropical lowland evergreen forest and flooded forest. It favors terra firme forest but also occurs more locally in várzea forest. In elevation it mostly ranges only to 500 m (1,600 ft) but locally is found as high as 1,200 m (3,900 ft).
- 迁徙
- Resident species
行为
The chestnut-winged foliage-gleaner is a year-round resident throughout its range.<p>The chestnut-winged foliage-gleaner feeds on arthropods. It typically forages in pairs, and usually in mixed-species feeding flocks. It mostly forages from the forest's mid-storey to its canopy though it will do so lower. It typically forages near the ends of branches, acrobatically gleaning prey from live and dead leaves and sometimes twigs.<p>Nothing is known about the chestnut-winged foliage-gleaner's breeding biology.<p>The chestnut-winged foliage-gleaner's song is a two- or three-second "fast, buzzy, slightly accelerating, quavering or slightly descending trill".
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Blue-throated Goldentail
Chlorestes eliciae
Uncommon and local, rather small hummingbird of humid forest edge, plantations, and woodlands in tropical lowlands and foothills. Perches and feeds mainly at middle to upper levels in shady understory and at edges. Note the bright red bill and greenish-gold tail (which often looks grayish). Male has violet gorget. Female has violet throat spotting, but often these areas look rather dull and grayish unless they catch the light.
Sahul Cicadabird
Edolisoma tenuirostre
Woodland bird of eastern and northern Australia and New Guinea. Strong sexual dimorphism in plumage. Male dark slaty-gray, with black around bill, and black on wings. Female brown, with dark line through eye, extensive fine barring on chest and belly, and fairly plain brown wings (much browner and lacking the white wingbars of Varied Triller). Shows geographical variation, especially in female plumage. Found in the canopy of a wide variety of forest, woodland, scrub, and savanna habitats. Calls include a long (10-second) sequence of insect-like repeated buzzes (hence its name), also a slower version, and a robin-like sequence of clear whistled notes.
Island Canary
Serinus canaria
Restricted to the Azores, Canary Islands, and Madeira. Slightly bigger than European Serin and yellow-green overall with a pale bill, and a dark forked tail. Has a streaky rump, but this can be hard to see. Males are greenish-yellow below while females are duller and grayer on the breast and neck. The song is very melodic and rich. Found in forests, plantations, gardens, and orchards, sometimes gathering in flocks. Introduced to the Midway Atoll, where coloration ranges from unstreaked bright yellow to almost white.
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