Red-crowned Ant-Tanager
Habia rubica
Fairly common in middle level understory of tropical and subtropical forests and woodlands. Usually in small groups, mainly comprising female-plumaged birds. Associates readily with similar Red-throated Ant-Tanager when attending army ant swarms. These two species are best told by voice: high squeaky calls in Red-crowned and low rasping calls in Red-throated. Also, Red-crowned tends to forage at higher levels and its plumage is slightly paler and plainer than Red-throated, without a contrasting dark mask (male) or buffy throat (female).
识别特征
The red-crowned ant tanagers is 17–19 cm (6.7–7.5 in) long and weighs 28–43 g (0.99–1.52 oz) (male) or 23–37 g (0.81–1.31 oz) (female). The adult male of the nominate subspecies is dull reddish brown with a brighter red throat and breast. The black-bordered scarlet crown stripe is raised when the bird is excited. The female is yellowish brown with a yellow throat and yellow-buff crown stripe.<p>It is a shy but noisy bird. Its call is a rattle followed by a musical pee-pee-pee.
分类信息
The red-crowned ant tanager was formally described in 1817 by the French ornithologist Louis Pierre Vieillot. He placed it in the genus Saltator (which he misspelled as Staltator) and coined the binomial name Saltator rubicus. He specified the locality as Paraguay. The specific epithet is from Medieval Latin rubicus meaning "reddish". The red-crowned ant tanager is now placed in the genus Habia that was introduced in 1840 by Edward Blyth.<p>There are 17 recognised subspecies:
- 学名
- Habia rubica
- 命名信息
- (Vieillot, 1817)
- 目
- Passeriformes
- 科
- Cardinalidae
- 属
- Habia
分布与栖息地
This bird is a resident breeder from Mexico south to Paraguay and northern Argentina, and on Trinidad. Common in its wide range, it is not considered threatened by the IUCN. It favors the middle stratum of the forest as well as undergrowth rich in ferns, shrubs and herbs.
- 迁徙
- Resident species
行为
These birds are found in pairs or family groups. They eat mainly arthropods, but berries are also taken. In Central America and Trinidad they frequently attend army ant columns, and in the lowland forests of southeastern Brazil they may be a nuclear species of understory mixed-species feeding flocks – though further uphill, e.g. in the Serra de Paranapiacaba, they seem to join such flocks only rarely and prefer to follow the ants on their own. They also follow South American coatis (Nasua nasua) on their feeding excursions, namely in the dry season. In both cases, they are commensales, snatching invertebrate prey startled by the ants or coatis.<p>The shallow cup nest is built by the female. It is usually placed in a sapling or tree fern near a stream. The normal clutch is two to three brown-blotched white eggs. These are incubated by the female for 13–14 days prior to hatching. The chicks are fed by both parents and leave the nest when about ten days old, before they are able to fly. They then hop around and hide in thick foliage.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Mountain Owlet-nightjar
Aegotheles albertisi
A small owlet-nightjar of montane forests. Dark head, pale collar, barred back and tail. A rufous morph also occurs. Day-roosting birds are sometimes found in dense thickets. May overlap with Wallace’s Owlet-nightjar, which lacks the pale collar, and Vogelkop Owlet-nightjar, which has a barred chest. Call, a sharp falling “wek!” or “wek-wek!” sounding like a squeaky toy or given as a raspy note.
White-throated Rock-Thrush
Monticola gularis
Uncommon throughout most of its range, this elusive rock thrush breeds in rocky hill forest in northeastern China and Russia and migrates down the East Asian coast to winter in southern China and mainland Southeast Asia. Beautiful and distinctive male has a blue crown, orange underparts, and black wings marked with a bright white patch; small white patch on throat is not obvious and difficult to see. Female is brown with scaly markings on her back and breast; she lacks a pale crescent behind the eye. Usually stays low in shrubbery, but male will sing from an exposed perch.
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.
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