Crestless Curassow
Mitu tomentosum
Large, terrestrial bird of flood-prone lowland rainforest; generally shy and difficult to see. Note all-dark appearance and small, red bill. Found in seasonally flooded forest, gallery forest in savanna, and near oxbow lakes. Forages on the ground for fallen fruit; usually alone or in pairs. Roosts in canopy and may flush into trees when disturbed. Told from other curassows in range by chestnut (not white) belly; Black Curassow is larger and has yellow knobs at base of bill. Song is a low humming, often given at night.
识别特征
The crestless curassow is 75 to 85 cm (2.5 to 2.8 ft) long. Males weigh 2,300 to 3,050 g (5.1 to 6.7 lb) and females 1,300 to 2,425 g (2.9 to 5.3 lb). It is mostly black with a dark blue to purplish gloss. Its belly and the tip of its tail are rich chestnut. Unlike most other curassows, it has no crest and no swelling on its red bill.
分类信息
The crestless curassow was originally described in genus Crax but genetic data confirm that Mitu is a valid genus. The crestless curassow is monotypic.
- 学名
- Mitu tomentosum
- 命名信息
- (Spix, 1825)
- 目
- Galliformes
- 科
- Cracidae
- 属
- Mitu
分布与栖息地
The crestless curassow is found in eastern Colombia, southern Venezuela, northwestern Brazil, and southwestern Guyana. It mostly inhabits rainforest along rivers, though it is also found in gallery forest in the llanos of Colombia and Venezuela. It tends to favor areas with thick undergrowth. It is a bird of lowlands; in Colombia it occurs up to 500 m (1,600 ft) and in Venezuela up to 600 m (2,000 ft).
- 迁徙
- Resident species
行为
The crestless curassow usually forages singly or in pairs but also very rarely in groups of up to 10. It mostly feeds on the ground. Its diet has not been studied but is reported to be almost entirely fallen fruits.<p>The crestless curassow's breeding season appears to coincide with the rainy season. It places its nest low in trees and lays two eggs.<p>The crestless curassow's song is "a low humming or booming 'uuut ... uu-UU-uu-uhoot'", performed year round but more frequently in the breeding season. Its alarm call is a "series of sharp, reedy whistles, 'queet'".
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Barred Antthrush
Chamaeza mollissima
Compact brown bird with a stubby black bill. Warm reddish brown with heavy black-and-white barring on the undersides, face, and eyebrow. Walks around the ground in dense montane forest with a springy gait, bobbing its tail up and down with each slow step. Exceptionally timid bird heard far more often than seen; listen for its long hooting song, an accelerating series of low toots.
Buffy Helmetcrest
Oxypogon stuebelii
Large, short-billed hummingbird found only at extremely high elevations in Colombia’s central Andes. Adult male’s green and blue beard, black and buff head pattern, and shaggy crest make him easily recognizable within his tiny world range. Female and younger males lack the crest and beard and have more subdued coloration, but they are still recognizable from their large size and relatively tiny bill. Often seen feeding from or perching on Espeletia plants. Espeletia, also known as Frailejón, is native to high Andean grasslands; it is characterized by its short, trunk-like stem, large, elongated leaves, and small, yellow flowers.
Fly River Grassbird
Poodytes albolimbatus
A fairly small bird of marshes in the Trans-Fly of New Guinea. Best seen by boat. Rufous crown, rump and upper tail, whitish underparts with buffy flanks, heavily streaked orange-brown back and black wing feathers edged with white. Inquisitive and often keeps its tail cocked and wings drooped. Similar to Tawny and Little Grassbirds, but Fly River has an unstreaked, rufous crown, and is smaller than Tawny. Voice, a monotone whistle and a harsh “chat!”.
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