White-browed Owl
Athene superciliaris
Mid-sized owl that is endemic to Madagascar. Combination of size, white crescents on the face, and heavy barring below are distinctive. Found locally in all forest types at low elevations, though seemingly absent from much eastern rainforest. Highly vocal, and frequently gives two different calls, often together: a rising “wheooow” and a series of nasal barks.
识别特征
The white-browed owl is a dumpy owl with a large, rounded head which does not have ear tufts. The adults have brown upperparts with white spotting on the crown, mantle and wing coverts and a grey-brown facial disc with bold white eyebrows and a buff chin. The underparts are buff, broadly barred with dark brown. The underwings, vent and legs are plain, pale buff and the tail is plain brown. The bill and cere are horn-coloured, the eyes are dark brown and legs and feet are pale yellow. The length is about 25 cm (9.8 in) and the wingspan is about 70 cm (28 in).<p>The song is a howling "woohoo" made at intervals, beginning quite hoarsely. Another call is a loud "kuang", louder and higher pitched at its start, which may be an aggression call.
分类信息
The white-browed owl was formerly placed in the genus Ninox but recent genetic data has led to it being moved to the genus Athene.
- 学名
- Athene superciliaris
- 命名信息
- (Vieillot, 1817)
- 目
- Strigiformes
- 科
- Strigidae
- 属
- Athene
分布与栖息地
The white-browed owl is endemic to Madagascar where it is found in the northeast, the south and the southwest.<p>It is commonest in the drier forests and gallery forests of the south and west of Madagascar, and rather less common in the humid rainforest in the northeast. It also occurs in cultivated areas and secondary forest. It is found mainly in the lowlands, with an upper limit of 800 m (2,600 ft) above sea level.
- 迁徙
- Vertical migration
行为
The white-browed owl nests from October to December and the nest is a shallow scrape in the ground in which 3-5 white eggs are laid. The breeding behaviour is little known. It is a strictly nocturnal species which feeds mainly on insects and small vertebrates which are caught from a perch. It may also hawk insects and bats in flight.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Smoky-brown Woodpecker
Dryobates fumigatus
Very small, rather plain woodpecker of tropical lowlands and foothills. Found in forests, woodlands, and plantations. Forages at all levels, mainly on smaller branches and in vine tangles, not so often in open situations. Appearance distinctive: smoky brown overall with a pale grayish face. Male has red crown.
Choco Tinamou
Crypturellus kerriae
A rare and poorly known chickenlike bird restricted to remote areas in extreme southeast Panama and northwest Colombia. Like other forest-based tinamous, this species walks on the ground and is very difficult to see. Occurs in mature foothill forests up to around 1,500 m. Dark brown overall with a blackish head, a slightly paler throat, and some darker barring on the belly and back. Legs reddish. Listen for its low mournful whistle that rises slightly at the end.
Seychelles Kestrel
Falco araeus
Unusually small kestrel with a gray head, a rufous back, unmarked buff underparts, a barred tail, and a dark “moustache” mark on the face. Found on several of the granitic Seychelles Islands. Originally found in areas of rainforest with cliffs and other rocky areas; now found in secondary scrub, cultivated areas, plantations, and towns, as well as in remnant natural habitat. Unlike other kestrels, does not hover. Call is a high, repeated “krii.” Shares general falcon shape with migrant and vagrant falcons, including Eleanora’s and Sooty Falcons, but smaller, with shorter, less pointed wings.
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