White-bellied Seedsnipe
Attagis malouinus
Chunky, generally scarce, rather grouselike bird of bleak moorland, bogs, and rocky slopes above timberline; in winter, sometimes descends to lowland Patagonian steppe, when it can be seen along roadsides. Found in pairs or small groups. Lacey “chainmail” pattern to upperparts is beautifully cryptic, and birds sometimes freeze when alarmed making them more difficult to see. No similar species in range; note the short stout bill and contrasting snowy-white belly. Flight strong and fast; flushes with loud shrieking choruses.
识别特征
The white-bellied seedsnipe is 26.5 to 29 cm (10 to 11 in) long and weighs about 310 to 400 g (11 to 14 oz). The sexes are essentially alike. Males' upperparts and breast have an intricate scallop pattern of buff, cinnamon, and black; their chin and belly are white. Females have a somewhat less sharp division between the breast and belly than males. Juveniles are very similar to adults but are slightly paler and have somewhat heavier scalloping.
分类信息
The white-bellied seedsnipe was described by the French polymath Georges-Louis Leclerc, Comte de Buffon in 1772, in his Histoire Naturelle des Oiseaux from a specimen collected on the Falkland Islands. The bird was also illustrated in a hand-colored plate engraved by François-Nicolas Martinet in the Planches Enluminées D'Histoire Naturelle which was produced under the supervision of Edme-Louis Daubenton to accompany Buffon's text. Neither the plate caption nor Buffon's description included a scientific name, but in 1783 the Dutch naturalist Pieter Boddaert coined the binomial name Tetrao malouinus in his catalogue of the Planches Enluminées.<p>The white-bellied seedsnipe is now placed in the genus Attagis that was erected by the French ornithologists Isidore Saint-Hilaire and René Lesson in 1831. Attagis was used for a game bird in Ancient Greek texts. It probably referred to the black francolin (Francolinus francolinus).<p>The specific epithet malouinus refers to the Îles Malouines, the French name for the Falkland Islands. The species is monotypic.
- 学名
- Attagis malouinus
- 命名信息
- (Boddaert, 1783)
- 目
- Charadriiformes
- 科
- Thinocoridae
- 属
- Attagis
分布与栖息地
The white-bellied seedsnipe is found from southern Chile's Magallanes Region and west-central Argentina's Río Negro Province south through Tierra del Fuego to islands off Cape Horn. It has also occurred as a vagrant in the Falkland Islands. In the breeding season it inhabits windswept ridges and moorland characterized by crowberry heath (Empetrum rubrum) and cushion plants. It also occurs along creeks and at small wetlands. Outside that season it mainly inhabits the Patagonian steppe.
- 繁殖区
- SA : high-montane s Chile and Rio Negro (wc Argentina) to Cape Horn
- 非繁殖区
- to plains of se Argentina
- 迁徙
- Vertical migration
行为
The white-bellied seedsnipe breeds between elevations of 650 and 2,000 m (2,100 and 6,600 ft) and moves to lower elevations in the austral winter. There it typically forms flocks of up to about 50 birds and sometimes more.<p>The white-bellied seedsnipe feeds on crowberry and other plant matter but details of its diet are lacking.<p>Little is known about the white-bellied seedsnipe's breeding biology. It lays eggs at least in December and January. Its nest is a shallow scrape in the ground lined with grass, moss, and lichen, and the clutch size is typically four eggs.<p>The white-bellied seedsnipe's flight calls are "an excited-sounding 'tu-whit tu-whit' or 'too-ee too-ee...', given continually."
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Square-tailed Nightjar
Caprimulgus fossii
Medium-sized, typical nightjar with bold pale spots on the back. Both sexes have a broad pale patch on the outer tail that is white in males and buff in females. Found in a variety of woodland and savanna habitats that are usually moist and often near water. Song is an extraordinarily long, dry trill that changes in speed and pitch. Most similar to Swamp Nightjar, but has smaller pale patches in the outer tail and lacks a blackish cheek; male has a white trailing edge to the wing in flight. Also similar to Montane Nightjar but found in different habitat.
Scarlet-rumped Tanager
Ramphocelus passerinii
Fairly common in humid tropical lowlands. Favors evergreen forest edges, plantations, and verdant second growth, such as areas along roadsides. Forages mainly at low to middle levels often in fairly noisy small groups. Male is unmistakable if seen clearly: velvety black with a blinding scarlet rump. Female is very different: note distinctive bluish-white bill, tawny rump, and grayish head. Formerly known as Cherrie's Tanager and Passerini's Tanager.
Bare-cheeked Trogon
Apaloderma aequatoriale
A trogon of lowland rainforests, almost always found in the forest interior, away from forest edges. Males and females have distinctive bare yellow facial skin below their eyes and between their eyes and bill. Both sexes have green backs and uppertails, red chests and vents, and finely barred wings. The species often calls motionless in the subcanopy, giving a series of 6-10 sad, descending coo notes, repeating these series 2-3 times per minute. Similar to the larger Narina Trogon, but Bare-cheeked Trogon is told apart by its song, its closed-canopy forest habitat, and the purely green tones on its head, back, and uppertail.
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