Curve-billed Reedhaunter
Limnornis curvirostris
Odd-looking wren-like bird with a cinnamon back and white underparts. Note the white eyebrow and the obvious curved bill. Found in marshes with extensive reedbeds, where it usually forages singly. Sings a fast series of harsh ascending notes that descends towards the end.
识别特征
The curve-billed reedhaunter is 15 to 17 cm (5.9 to 6.7 in) long and weighs 27 to 30 g (0.95 to 1.1 oz). It is a small furnariid whose plumage closely resembles that of some Old World reed warblers of genus Acrocephalus. It has a long and quite decurved bill. The sexes' plumages are alike. Adults have a whitish supercilium, an ill-defined dark brown band behind the eye, lighter brown ear coverts with some thin whitish streaks, and a whitish malar area. Their crown, nape, back, rump, and uppertail coverts are rich brown; the brown is darkest on the crown and gradually becomes more rufescent to the uppertail coverts. Their wings and tail are rufescent brown. Their throat is whitish, their breast more buffy, their belly creamy buff, their flanks cinnamon-buff, and their undertail coverts a rich buff. Their iris is brown, their maxilla brown to blackish, their mandible a whitish and brownish mix, and their legs and feet grayish.
分类信息
The curve-billed reedhaunter and the superficially similar straight-billed reedhaunter (Limnoctites rectirostris) were long thought to be closely related; some authors merged Limnoctites into Limnornis. Genetic studies in the early 2000s refuted this approach by finding that the two species of genus Limnoctites were instead closely related to the spinetails of genus Cranioleuca. The curve-billed reedhaunter is instead most closely related to the wren-like rushbird (Phleocryptes melanops).<p>The curve-billed reedhaunter is the only member of its genus and has no subspecies.
- 学名
- Limnornis curvirostris
- 命名信息
- Gould, 1839
- 目
- Passeriformes
- 科
- Furnariidae
- 属
- Limnornis
分布与栖息地
The curve-billed reedhaunter is found in the Brazilian state of Rio Grande do Sul, in southern Uruguay, and in eastern Argentina's Entre Ríos and Buenos Aires provinces. It primarily inhabits freshwater marshes and also occurs in brackish ones such as coastal lagoons. Their vegetation is often dominated by the sedge Scirpus giganteus and the grass Zizaniopsis bonarinsis. It is essentially coastal, with an elevation range from sea level to only about 100 m (330 ft).
- 迁徙
- Resident species
行为
The curve-billed reedhaunter is a year-round resident throughout its range.<p>The curve-billed reedhaunter feeds on a variety of adult and larval arthropods that it gleans from marsh vegetation. It usually forages by itself.<p>The curve-billed reedhaunter is assumed to breed during the austral spring and summer, and is thought to be monogamous. It constructs a ball-shaped nest of grass, leaves, and other fibers and lines it with softer plant material. The nest has a side entrance, usually with an overhanging "awning". It attaches the nest to reeds or atop vegetation. The clutch size is two eggs. The incubation period, time to fledging, and details of parental care are not known.<p>The curve-billed reedhaunter's song is a "fast series of harsh notes that ascend and then descend in pitch, fading towards [the] end". Its call is "a hollow 'took' ".
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
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Madagascar Owl
Asio madagascariensis
Fairly large, brown owl with long ear tufts. Endemic to Madagascar, where it is found locally in all forest types, and sometimes in scrub and plantations. Usually roosts high in a tree, often in an introduced pine tree. Call is a series of nasal barks, similar to White-browed Owl but less quick and emphatic. Similar in size to Marsh Owl, but has prominent ear tufts and a pale chest with fine streaks. Much larger than Malagasy and Torotoroka Scops-Owls.
Golden-breasted Bunting
Emberiza flaviventris
A stunningly-colored bunting with a brilliant golden breast, a yellow throat, a boldly black-and-white striped head, a chestnut back, and white wingbars. When flushed, it shows white outer tail feathers. The female is duller. Pairs and small flocks are resident, but make local movements in arid savanna and broadleaf woodland, where they forage on the ground and fly up into trees when flushed or singing. The species has a mellow descending two-note “whit-wheeer” nasal call and a sweet, clearly whistled “tree-chee-tree-chee” song. The similar Brown-rumped and Somali buntings differ from Golden-breasted Bunting by having gray (not chestnut) shoulders and back of the neck.
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