Harlequin Antbird
Rhegmatorhina berlepschi
Striking antbird with a cinnamon breast band and a bare eyering. Males have gray underparts, while females have buff underparts scaled with black. Has a very small global range, occurring in the understory of humid forests, where it attends army-ant swarms. The song is a series of descending whistles ending with a harsh “chirr.”
识别特征
The harlequin antbird is 14 to 15 cm (5.5 to 5.9 in) long. Both sexes have a small crest and a pale grayish green ring of bare skin around the eye. Adult males have a dark brownish crown; their crest and nape are rufous-chestnut. Their upperparts, wings, and tail are olive-brown with rufous edges on the wing feathers. Their face and throat are black and their breast's center rufous-chestnut. The sides of their neck and the rest of their underparts are gray with an olive-brown tinge on the flanks. Adult females are similar to males with the addition of buff-edged black tips on their upperpart feathers and wing coverts and black and pale buff banding on their sides and lower breast.
分类信息
The five members of genus Rhegmatorhina are sisters to the three species of genus Gymnopithys. The harlequin antbird frequently hybridizes with the congeneric white-breasted antbird (R. hoffmannsi). The harlequin antbird is monotypic.
- 学名
- Rhegmatorhina berlepschi
- 命名信息
- (Snethlage, E, 1907)
- 目
- Passeriformes
- 科
- Thamnophilidae
- 属
- Rhegmatorhina
分布与栖息地
The harlequin antbird has a very limited range in Amazonian Brazil. It is bounded by the Amazon on the north, the Rio Madeira on the west, and the Rio Tapajós on the east. Its southern limit is indistinct. The species inhabits the understorey of humid terra firme evergreen forest. Its range is entirely below 100 m (300 ft) of elevation.
- 迁徙
- Resident species
行为
The harlequin antbird is a year-round resident.<p>The harlequin antbird is an obligate ant follower that feeds on a variety of arthropods that flee foraging army ant swarms, such as those of Eciton burchelli. It typically forages individually, in pairs, and in family groups, perching within about 1 m (3 ft) of the ground and sallying or pouncing to the ground after prey. Several family groups may attend an ant swarm. It is dominant over smaller antbirds but subordinate to larger antbirds and species of other families such as woodcreepers.<p>The harlequin antbird is believed to breed late in the rainy season, perhaps beginning in December. Nothing else is known about the species' breeding biology.<p>The harlequin antbird's song is a "very high, slightly descending series of loud, sharp notes, the 1st drawn out, the rest becoming shorter". Its calls include a "harsh, vibrant 'chirr' [and an] abrupt 'chip' ".
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Waved Woodpecker
Celeus undatus
Medium-sized woodpecker of rainforest. Note compact shape and uniform brown coloration with a pale bill. Often with mixed-species flocks, occurring from the mid-story to the canopy. Also occurs in lower-stature forests with sandy soils. Climbs trunks and large branches in typical woodpecker fashion; explores bark crevices and arboreal termite nests. Usually first detected by its distinctive nasal call. Superficially similar to Chestnut Woodpecker but is less richly colored and much smaller.
Yellow Bittern
Botaurus sinensis
Very small heron of marshy, well-vegetated water bodies. Adult pale orangish brown or yellow, depending on the light, with a narrow dark cap. Juvenile darker above with pale feather edges. Can be inconspicuous in dense vegetation, but frequently makes short flights; on flying birds, note dark flight feathers contrasting with pale yellowish wing coverts. Typically quiet, but occasionally gives harsh grating calls when flushed.
Greater Adjutant
Leptoptilos dubius
Immense and imposing undertaker of a stork with a bare head and neck, pale eyes, and dark gray wings. Overlaps in some areas with similar but smaller Lesser Adjutant; note pale wing panel, paler heavier bill, prominent white neck ruff, and when in flight, grayer and less contrasting underwing. Forages in expansive wetlands and grasslands; also congregates in immense numbers at garbage dumps.
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