White-bellied Spinetail
Mazaria propinqua
Small bird with a long, graduated tail. Both sexes have a brown back and rusty wings and tail; note the black throat. Occurs on river islands in dense, scrubby early successional vegetation. The song is a mechanical, nasal “eh, ehhhhhhhh.” The similar Plain-crowned Spinetail lacks the black throat, and Pale-breasted Spinetail has a rusty crown.
识别特征
The white-bellied spinetail is 14.5 to 16 cm (5.7 to 6.3 in) long and weighs 16 to 22 g (0.56 to 0.78 oz). The sexes have the same plumage. Adults have gray lores on an otherwise grayish brown face. Their crown, back, rump, and uppertail coverts are also grayish brown. Their flight feathers are mostly dusky with pale rufous edges on the primaries. Their tail is dull rufous; the feathers are pointed. Their chin and upper throat are white or black with white fringes on the feathers. Their lower throat is black with white on the feather tips. Their breast is gray or pale brownish gray, their belly white, and their flanks pale brown. Their iris is brown, their maxilla black, their mandible gray or pale gray, and their legs and feet olive or olive gray. Juveniles have whiter underparts than adults, with no black on their throat and tawny rather than rufous wings.
分类信息
The white-bellied spinetail was originally described in genus Synallaxis. Much later, molecular phylogenetic studies found that it is not closely related to the other members of the genus and it was moved to its own genus Mazaria. It and the chotoy spinetail (Schoeniophylax phryganophilus) are sister species.<p>The white-bellied spinetail is monotypic: No subspecies are recognized.
- 学名
- Mazaria propinqua
- 命名信息
- (Pelzeln, 1859)
- 目
- Passeriformes
- 科
- Furnariidae
- 属
- Mazaria
分布与栖息地
The white-bellied spinetail is found along rivers in the western Amazon Basin of extreme southeastern Colombia, eastern Ecuador, northeastern and east-central Peru, northern Bolivia, southern French Guiana, and western Brazil. (It is known in French Guiana from a single specimen.) The South American Classification Committee of the American Ornithological Society calls the species hypothetical in Colombia. Major rivers in addition to the upper Amazon itself are the Napo, Pastaza, Ucayali, Madre de Díos, Jurua, and Tocantins. The white-bellied spinetail inhabits early successional growth on river islands, where it favors grassy areas with scattered bushes and small trees. It is a bird of the lowlands, reaching only 200 m (700 ft) in Colombia and Bolivia and 300 m (1,000 ft) in Ecuador.
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: stable.
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Sombre Greenbul
Andropadus importunus
The adult is a uniform drab-olive greenbul, slightly paler on the belly, with striking pale eyes that are characteristic. Juveniles have dark eyes and a small yellow gape. Pairs skulk and can be quite secretive in the midstory and canopy of forest, forest edge, and thickets up to 2000 meters of elevation, foraging on fruits and insects. It is often first detected by its loud, shrill “Willie! …..come out and play with me” song, ending with a nasal “sca-a-ared.” Northern birds sing a different song with a similar quality.
Stephan's Dove
Chalcophaps stephani
A small rufous dove with conspicuous emerald-green wings, an orange bill, and a pale forehead that is white in males and gray in females. Juveniles have duller bare parts, some barring, and reduced iridescence. Typically seen singly, foraging on the forest floor or perched low in the understory. Pale patch is restricted to forehead, and this, in combination with brown back and brown tail, distinguishes this species from Asian and Pacific Emerald Doves. Song is a soft “hoo-hoo-hoo-hoo,” gradually rising and accelerating.
Western Yellow-billed Barbet
Trachylaemus goffinii
A large brightly colored barbet of forests and forest edges. Distinctive with its bright yellow bill, dark head, back, and tail, and yellow belly. There is regional variation within the species, especially prominent on the throat, which can be dark with small pale speckles or heavily streaked with whitish. Found in rainforest and lower montane forest, usually in the understory, and especially in treefall gaps, and along forest edges. Voice consists of a low “oop” or “op-oop” given in slow succession, sometimes for several minutes.
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