Seychelles Warbler
Acrocephalus sechellensis
A medium-sized yellowish-olive bird with a long tail. A scarce endemic that is restricted to a few granitic islands of the Seychelles, where it is found in scrub, woodland, and mangroves. Vaguely similar to Seychelles White-eye, but larger, longer-tailed, paler below, and without bold white spectacles. The cheerful song is a quick series of several musical warbling notes in an up-and-down pattern. Also gives scratchy call notes.
识别特征
The Seychelles warbler is a small, plain Acrocephalus warbler, between 13 and 14 cm (5.1–5.5 in) in length and with a wingspan of 17 cm (6.7 in). It has long grey-blue legs, a long horn-coloured bill, and a reddish eye. Adults show no sexual dimorphism in their plumage. The back, wings, flanks and head are greenish-brown and the belly and breast are dirty white. The throat is a stronger white and there is a pale supercilium in front of the eye. Juvenile birds are darker with a more bluish eye.<p>The voice of the Seychelles warbler is described as rich and melodious, similar to a human whistle. Its structure is simple and is composed of short song sequences delivered at a low frequency range. The lack of a wide frequency range sets it apart from other species in its genus, such as the reed warbler, its song is similar to its closest relatives in Africa such as the greater swamp warbler.
分类信息
The Seychelles warbler is closely related to the Rodrigues warbler (Acrocephalus rodericanus) and the two species have sometimes been placed in their own genus, Bebrornis. The two species have also been considered allied to the Malagasy genus Nesillas. A 1997 study confirmed, however, that the two species were part of a clade of Afrotropical warblers within Acrocephalus that also includes the Madagascar swamp warbler, the greater swamp warbler, the lesser swamp warbler and the Cape Verde warbler.
- 学名
- Acrocephalus sechellensis
- 命名信息
- (Oustalet, 1877)
- 目
- Passeriformes
- 科
- Acrocephalidae
- 属
- Acrocephalus
分布与栖息地
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: rising.
- 种群趋势
- rising
照片
分布
其他鸟类
Pileated Finch
Coryphospingus pileatus
A distinctive gray finchlike bird found at forest edges and in light woodlands and scrub. Males are mostly gray with a white throat and a black crown with a red center, which can be erected when the bird is excited. Females are brown above and paler below with weak streaks on the breast.
Marbled Duck
Marmaronetta angustirostris
Small, subtly beautiful, gray-brown duck with a black eye-mask, long neck and wings, and dark bill. Vaguely resembles a female pintail. Both sexes are similar but males sport a more prominent shaggy crest. In flight looks pallid, with whitish underwings, pale secondaries, and dark wingtips. Mostly silent. Typically found in shallow, freshwater or brackish wetlands with abundant emergent vegetation.
Checker-throated Woodpecker
Chrysophlegma mentale
Ornate medium-sized woodpecker. Moss-green with blood-red wings and neck. Back edge of head and neck are brightened by a sunny yellow crest. Black-and-white “checker” throat is not particularly obvious. Prefers mature lowland and hill forests; seldom seen in secondary growth or sparsely-vegetated edge. Typically forages at mid-levels of forest, frequently singly but also in mixed flocks or pairs. Gives loud, insistent “nyeh” notes and a strident “choo-yik!”
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