Band-tailed Antshrike
Thamnophilus melanothorax
A rarely encountered large antshrike. Both sexes are distinctive; male is mostly black with a broad white tail band, whereas female is mostly rusty-colored with a black face and throat. Pairs inhabit disturbed areas in forested regions and are especially fond of dense vine tangles. May ascend into midstory but usually remains in undergrowth where they are difficult to see. Song is a slow series of hollow notes, much slower than other antshrikes in range; also harsh churring in alarm. Range incompletely known.
识别特征
The band-tailed antshrike is 16 to 17 cm (6.3 to 6.7 in) long; one individual weighed 31 g (1.1 oz). Members of genus Thamnophilus are largish members of the antbird family; all have stout bills with a hook like those of true shrikes. Adult males are almost entirely black except for a hidden white patch between the scapulars, small white spots on the wing coverts, and the eponymous wide white band at the end of the tail. Adult females have a bright deep rufous crown, upperparts, wings, and tail. Their face, throat, and breast are black. The rest of their underparts are gray with a reddish brown cast on the flanks and crissum.
分类信息
The band-tailed antshrike was described by the English zoologist Philip Sclater in 1857 and given the binomial name Thamnophilus melanothorax. It was subsequently placed in the genus Sakesphorus. A molecular phylogenetic study published in 2007 found that Sakesphorus was polyphyletic and that three species including the band-tailed antshrike were embedded within a clade containing members of Thamnophilus. The band-tailed antshrike was therefore moved back to its original genus.<p>The band-tailed antshrike is monotypic.
- 学名
- Thamnophilus melanothorax
- 命名信息
- Sclater, PL, 1857
- 目
- Passeriformes
- 科
- Thamnophilidae
- 属
- Thamnophilus
分布与栖息地
The band-tailed antshrike is found from southern Guyana across Suriname and French Guiana and into northeastern Brazil's Amapá state; there is also one good sight record near Manaus in Brazil's Amazonas state. It primarily inhabits the understorey of evergreen forest though it also occurs higher into the mid-storey. It favors dense vines and other vegetation growing in gaps made by fallen trees and abandoned human-made openings. It also occurs in swampy depressions and in dense riverside thickets. In elevation it ranges from near sea level to 550 m (1,800 ft).
- 迁徙
- Resident species
行为
The band-tailed antshrike is thought to be a year-round resident throughout its range.<p>The band-tailed antshrike's diet is not well known but is assumed to be insects and other small arthropods. It forages singly or in pairs and seldom as part of a mixed-species feeding flock. It forages mostly in dense cover on and near the ground up to about 10 m (35 ft) high. It feeds by gleaning from vegetation, vines, branches, and the ground.<p>Nothing is known about the band-tailed antshrike's breeding biology.<p>The band-tailed antshrike's song is a "slow, slightly accelerating series of 7-9 low, hollow 'ah' notes". Its call is "a muffled, nasal growl, sometimes doubled".
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Gundlach's Hawk
Astur gundlachi
A secretive raptor of wooded habitats including mangrove swamps. Though this species sometime soars, its flight is usually powered by several rapid flaps followed by a brief glide. In flight, note the long rounded tail, short rounded wings, and a large head that protrudes well in front of the wings. Adults are barred orange below while immatures are streaked brown. The similar Sharp-shinned Hawk is somewhat smaller in body and head and has a shorter, squared-off tail. Migrant Sharp-Shinned Hawks from North America are scarce within this species’ range, and are best told by structure and size. Resident Sharp-shinned Hawks, which share this species’ range are conveniently barred gray below. Immature Sharp-shinned Hawks can also be distinguished from Gundlach’s by their narrow, but distinct white eyebrow. The Broad-winged Hawk is somewhat similar, but it is much shorter tailed and somewhat longer winged. The common call is an emphatic “eh-eh-eh-eh-eh…,” with the first couple notes quieter than rest.
Aldabra Drongo
Dicrurus aldabranus
Bold, black fork-tailed bird with a red eye. There is sometimes but not always a tuft of long feathers above the bill. Juveniles have an unusual pale-gray plumage, but still show the forked tail. Found in all habitats with bushes and trees on the remote Seychelles island of Aldabra, including forest, mangroves, and thick scrub. Perches prominently in the open, swooping out to catch insects on the wing. Often follows Madagascar Coucals and Aldabra Giant Tortoises, feeding on insects that they disturb. Song is a repeated sequence of whistles, creaks, and rasps.
Yellow-faced Myna
Mino dumontii
A fairly large bird of lowland and foothill forest canopy. Mainly black plumage with yellow eye, belly and an orange-yellow bill with a thin yellow line leading down from the base. Also, white above and below the base of the tail and white wing patch noticeable in flight. Often found in flocks at fruiting trees and sometimes associates with Golden Myna. Similar to Golden Myna, especially in flight, but Yellow-faced Myna has yellow, bare facial skin around the eye, black chest and white rump. Voice, a nasal, froglike “gau-wak!”.
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