Ochre-browed Thistletail
Asthenes coryi
Tiny bird with a long, spiky red tail, a vocal and active resident of grass and bushes above treeline. Dull brown upperparts, grayish brown underparts, and a distinctive orange face and chin. Sexes similar. Not common and difficult to approach closely; often alone or in pairs foraging in paramo bushes or treeline borders. Song is an ascending series of high-pitched whistles “fuuuuuEE-peep-PEEP-PEE’REE!” Call is a soft, querulous “peew.” The only unstreaked Furnariid in the Venezuelan paramo. Endemic to the Andes of Venezuela.
识别特征
The ochre-browed thistletail is 16 to 18 cm (6.3 to 7.1 in) long and weighs 15 to 18 g (0.53 to 0.63 oz). The sexes have the same plumage. Adults have an ochraceous supercilium on an otherwise darker face. Their forehead is dull ochraceous rufous, and their crown, back, rump, and tail are olive-brown. Their wings are a dull reddish brown. Their tail is long and deeply forked with few barbs at the feather ends that give a ragged appearance. Their chin has a tawny-rufous patch. Their throat and the rest of their underparts are pale gray-brown with a whitish center to the belly. Their iris is dark brown to gray-brown, their bill dark grayish brown with a pinkish base to the mandible, and their legs and feet bluish gray.
分类信息
The ochre-browed thistletail was long treated as a subspecies of the white-chinned thistletail (then Schizoeaca fuliginosa, now Asthenes fuliginosa) but was eventually separated as a species. They and several other species were in genus Schizoeaca but genetic data showed that the genus is embedded within Asthenes. The ochre-browed thistletail is monotypic.
- 学名
- Asthenes coryi
- 命名信息
- (Berlepsch, 1888)
- 目
- Passeriformes
- 科
- Furnariidae
- 属
- Asthenes
分布与栖息地
The ochre-browed thistletail is found in the Andes of western Venezuela between the states of Trujillo and Táchira. It primarily inhabits páramo grasslands, taller páramo vegetation, the upper edge of cloudforest, and dense undergrowth at tree line. In elevation it mostly ranges between 3,500 and 4,100 m (11,500 and 13,500 ft) though it occurs in openings in cloudforest as low as 2,800 m (9,200 ft).
- 迁徙
- Resident species
行为
The ochre-browed thistletail is a year-round resident throughout its range.<p>The ochre-browed thistletail feeds mostly on arthropods but also includes small amounts of seeds in its diet. It usually forages singly or in pairs and will occasionally join mixed-species feeding flocks. It gleans its prey mostly from foliage and small branches in the understory but occasionally will feed on the ground.<p>Nothing is known about the ochre-browed thistletail's breeding biology.<p>The ochre-browed thistletail's song is "a dry, rattling trill [that] decelerates at end, 'pipipi-pi-pi-pi-pi-pi-pi-pi-pi, pi, pi, pi, pt, pt' ". Its calls include "a high-pitched, nasal 'meeeow', [a] squeaky, rodent-like 'peeeap' [and] a high 'péé-d-deet' ".
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
White-eared Night Heron
Oroanassa magnifica
Rare and elusive night-heron with a bug-eyed, almost “alien,” appearance. Highly localized, seldom encountered far from its nesting colonies and roost sites. Black above with gray streaking on the chest and a clean white-and-orange head pattern, though this can be hard to see in poor lighting. Forages quietly in well-shaded forest streams, but most reliably seen in its small breeding colonies, usually hidden deep in a stand of bamboo or evergreen trees.
Golden-naped Weaver
Ploceus aureonucha
An enigmatic dark forest weaver with a reddish-brown forehead and crown and a golden-orange collar on the hind neck. Male has reddish-brown extending to the breast and throat and golden streaks on the back, which the female lacks. Very poorly known and localized, restricted to primary and secondary lowland forest and forest edge in the Ituri and Semliki forests in the western Congo Basin. Although it is distinctive in appearance, it is possible that this species is a hybrid. The voice has been described as a weak chatter.
Greater Coucal
Centropus sinensis
A large bird that resembles a cross between a crow and a pheasant. Largely black with distinctive rusty wings, glossy underparts, a long and heavy black tail, and deep red eyes. Juveniles are much duller with white bars on the tail and underparts and variable amounts of black streaks on the wings and upperparts. Common across a range of habitats except very dense forests. Similar to Lesser Coucal, but Greater Coucal is larger with a longer bill and red eyes. Adult Greater Coucals also lack the white streaks on the wings seen on Lesser Coucal. The call is a series of deep, resonant “oop-oop-oop” notes.
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