Wallace's Hawk-Eagle
Nisaetus nanus
Typical small hawk-eagle. Small upright crest visible when perched. Adult has dark brown wings and a paler face. In flight, look for densely black-barred underparts, two white bands across the tail, and light brown on the inner part of the underwing (compared with the completely black-and-white underwings of Blyth’s Hawk-Eagle). Visibly smaller than both Blyth’s and Mountain hawk-eagles. Juvenile Wallace’s is pale tawny-brown on the head and on the underparts; the similar Blyth’s Hawk-Eagle has tail barring. Jerdon’s Baza can appear similar, but it has horizontal banding across the breast, whereas juvenile Wallace’s has unmarked underparts, pantaloons (fully feathered legs), and a broader black tip to the tail. Wallace’s Hawk-Eagle is often seen in flight over or perched on a snag in lowland forests and forest edges.
识别特征
Wallace's hawk-eagle (Nisaetus nanus) is a species of bird of prey in the family Accipitridae. It is found in Kra Isthmus, Malay Peninsula, Sumatra and Borneo. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss and trade. It is among the smallest eagles in the world at about 46 cm (18 in) long and weighing 500–610 g (1.10–1.34 lb) (about the size of a peregrine falcon). It is named after Alfred Russel Wallace, a British naturalist, explorer, geographer, anthropologist and biologist. It is non-migratory.
分类信息
Genus: Nisaetus; Family: Accipitridae; Order: Accipitriformes.
- 学名
- Nisaetus nanus
- 命名信息
- (Wallace, 1868)
- 目
- Accipitriformes
- 科
- Accipitridae
- 属
- Nisaetus
分布与栖息地
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: declining.
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Golden Bush-Robin
Tarsiger chrysaeus
Shining and distinctively yellow robin of the montane forest understory. Male sports a blazing golden brow, yellow underparts, and a black face. Female is less contrastingly patterned, but still noticeably yellow, with browner underparts and a white eyering. Both sexes have a yellow panel on either side of the tail. Song is composed of rolling, buzzing notes; it is not as melodic as those of some other bush-robins.
Golden-bellied Gerygone
Gerygone sulphurea
Tiny and rather unobtrusive bird with brownish upperparts and luminous lemon-yellow underparts. Superficially similar to female and juvenile Olive-backed Sunbirds, but note gerygone’s short, uncurved bill. Forages in parks, forests, and plantations, where it often joins mixed flocks moving through the middle and upper layers. Song is variable throughout its range but invariably includes buzzy notes with obvious rises and falls in pitch.
King Bird-of-Paradise
Cicinnurus regius
A fairly small bird of lowland and foothill forest and edge. Blue feet and yellow bill. Male has white belly, bright red upperparts down to the upper chest, metallic green breast band with thin yellow line above and 2 tail wires ending in a metallic green, snail-shaped disk. Female is brown with barred underparts. Male unmistakable. Female similar to female Magnificent Bird-of-Paradise, but female King has yellow rather than blue bill. Voice, a descending series of nasal whines.
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