Besra
Tachyspiza virgata
A medium-sized Accipiter of forested areas. Adult grayish brown above with a grayer head and neck, pale underparts with orange barring and blotches, and distinctive dark line in center of white throat. Coloration overall recalls Crested Goshawk, but the goshawk is much bulkier. Juvenile browner overall, with vertical brown streaking on the breast and belly.
识别特征
The besra (Tachyspiza virgata), also called the besra sparrowhawk, is a bird of prey in the family Accipitridae. It was formerly placed in the genus Accipiter. The name "besra" is from the Hindi word for the species. The besra is a widespread resident breeder in dense forests throughout southern Asia, ranging from the Indian subcontinent eastwards across Southeast Asia and into East Asia. It nests in trees, building a new nest each year. It lays 2 to 5 eggs. It is a medium-sized raptor (29 to 36 cm) with short broad wings and a long tail, both adaptations to fast maneuvering through dense vegetation. The normal flight of this species is a characteristic "flap–flap–glide". This species is like a darker version of the widespread shikra with darker upperparts, strongly barred underwing, broader gular stripe and thin long legs and toes. The adult male besra has dark blue-grey upperparts, and is white, barred reddish brown below. The larger female is browner above than the male. The juvenile is dark brown above and white, barred with brown below. In all plumages have 3-4 equally sized dark bands on uppertail. In winter, the besra will emerge into more open woodland including savannah and cultivation. Its hunting technique is similar to other small hawks such as the sparrowhawk and the sharp-shinned hawk, relying on surprise as it flies from a hidden perch or flicks over a bush to catch its prey unaware. The prey is lizards, dragonflies, and small birds and mammals.
分类信息
Ten subspecies are recognised:
- 学名
- Tachyspiza virgata
- 命名信息
- (Temminck, 1822)
- 目
- Accipitriformes
- 科
- Accipitridae
- 属
- Tachyspiza
分布与栖息地
- 迁徙
- Vertical migration
行为
Migration pattern: Vertical migration.
保护状况
Population trend: declining.
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Mountain Wagtail
Motacilla clara
Elegant, long-tailed bird with a gray back, pale underparts, and a black chest band. White outer tail is conspicuous in flight. Found along streams, mainly within montane forest. Feeds by walking along the ground, bobbing its tail constantly. Call is a buzzy “tseeet”. Song is a complex and beautiful jumble of high notes and trills. Similar to Cape Wagtail but has gray rather than brown upperparts and has more white in the wings and tail. Also similar to Gray Wagtail but lacks yellow on the underparts.
Ochre-cheeked Spinetail
Synallaxis scutata
Boldly marked species with a long spiky tail, reddish-brown upperparts, and grayish crown. Note the conspicuous white eyebrow and the white throat bordered below by a black patch. Inhabits dense undergrowth of deciduous and semi-deciduous forest. Occasionally accompanies mixed-species flocks. Sings a high, thin, shrill “tweet, to-wéét,” repeated for long periods.
Indigo-winged Parrot
Hapalopsittaca fuertesi
Rare and endangered parrot restricted to high elevations in the central Andes of Colombia. Plumage is golden green with a sapphire crown; the blue and red in the wings and tail are usually evident when perched, and can be more striking when seen in flight. Usually encountered in groups of several to a dozen birds that fly from fruiting tree to fruiting tree in compact flocks. Formerly very difficult to find, but in recent years it has been reliably encountered along dirt roads high above the town of Santa Rosa de Cabal.
开始您的观鸟之旅
在户外识别鸟类，并在下一次观察时随手查阅鸟类图鉴。