Razor-billed Curassow
Mitu tuberosum
Large dark bird of undisturbed rainforest. Its red, crested bill is easily recognizable. It has a dark body that appears iridescent navy blue in good light, with light red legs and a buffy tail tip. Found on the ground or in trees, sometimes quite high, in mature rainforest, usually singly or in pairs. Can be quite secretive, especially in areas with a lot of human activity. Gives a sharp, metallic “pick” call that is easy to overlook, as well as low booming calls around dawn and dusk.
识别特征
The razor-billed curassow is 83 to 89 cm (2.7 to 2.9 ft) long and males weigh about 3,860 g (8.5 lb). Their plumage is mostly black with a strong purplish blue gloss. The lower belly and undertail coverts are chestnut and the tips of the tail feathers white. It has a tall ragged crest. Its large bright red bill is laterally compressed, which gives the species its common name.
分类信息
The razor-billed curassow was originally placed in genus Crax but genetic data confirm that Mitu is a valid genus. It was for a time treated as a subspecies of Alagoas curassow (Mitu mitu) and they are now treated as sister species. The razor-billed curassow is monotypic.
- 学名
- Mitu tuberosum
- 命名信息
- (Spix, 1825)
- 目
- Galliformes
- 科
- Cracidae
- 属
- Mitu
分布与栖息地
The razor-billed curassow is found in much of Amazonia, mostly south of the Amazon River in eastern Peru, northern Bolivia, and northern Brazil all the way to the Atlantic coast. It is found north of the Amazon in southeastern Colombia, extreme northeastern Peru, and Brazil as far east as the Rio Negro. It inhabits lowland evergreen forest, primarily terra firme but also gallery and várzea forests and along the margins of lakes and streams. In elevation it ranges from sea level to 1,350 m (4,400 ft) though it may only locally exceed 1,000 m (3,300 ft).
- 迁徙
- Resident species
行为
The razor-billed curassow typically forages alone or in pairs on the forest floor. Its diet is mostly fallen fruits and also includes leaves, insects, fungi, and small vertebrates.<p>The razor-billed curassow is occasionally polygynous and might be regularly so. In northern Peru at least, its nesting season spans from November to February. One nest was described as "a perfect round cup" of branches, lianas, and leaves. The clutch size is two or three eggs.<p>The razor-billed curassow's song is " "a series of deep booming notes, the first 3 rising, the last 2 even at a slightly higher pitch: BMMM mmMMM... mmMMM'BMMM-BMMM, sometimes followed after pause by sharp BMM!." It is sung from a perch at any time of day but most frequently before and at dawn and during the breeding season. Its calls include "rising whistles and popping notes" and "soft pweet calls".
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Tricolored Munia
Lonchura malacca
Small, finchlike bird of weedy and grassy areas in tropical lowlands. Often in small flocks, which associate readily with seedeaters and grassquits. Adult is handsome and striking with rusty upperparts. Black head and underparts are cut by a broad white swath from flanks across the lower breast. Note stout gray bill. Juvenile notably plain, buffy brown overall with stout bluish-gray bill. Note the pointed tail, unlike seedeaters and grassquits. Native to Asia and spreading in New World as an escaped cage bird.
Stripe-faced Wood-Quail
Odontophorus balliviani
Chunky, dark brown quail of cloud forest and elfin forest. Dark brown body is spotted white below; black bandit mask and reddish crown are distinctive. May be found singly, in pairs, or in small groups. Quite secretive, and often goes undetected until flushed suddenly from nearly underfoot. Forages on the ground, climbing over mossy tree roots and scraping aside leaves with its feet to look for small prey. Listen for its low caroling song given at dusk, an often duetted “dwee-put, dwee-put….”
Dusky-legged Guan
Penelope obscura
Large guan with a long tail and red throat wattle. Dark brown overall with an olive tinge to the upperparts and warmer brown belly. Unlike most other members of its genus, Dusky-legged has dull grayish legs. Note frosted forehead and variable thin white streaks on the neck and underparts. Found in lowland and foothill forest, including forest edge and scrub. Listen for loud, harsh calls and brays, often given in a series. Occurs from southeastern Brazil to Buenos Aires. Usually in pairs or small groups; often seen feeding at fruiting trees, but can be seen walking on the ground.
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