Yellow-knobbed Curassow
Crax daubentoni
A large, elegant black and white turkey-like bird with a prominent curly crest. Both sexes have a white belly and white tipped tail, but the male has a larger crest and yellow base to the bill with a large yellow knob; female is faintly barred white on the breast and has dark gray bill lacking the knob. No overlap with other curassow species. Found in dry forest, gallery forest, and humid forest; most often encountered walking in understory or crossing trails in small groups, but sometimes also seen perched higher in trees. Vocally active in breeding season; song is a surprisingly high-pitched, long, descending whistle “WHEEEeeeeeeeeeeuuuuuuuuuuu,” reminiscent of a raptor.
识别特征
The yellow-knobbed curassow is 84 to 92.5 cm (2.8 to 3.0 ft) long. Males usually weigh between 2,925 and 3,200 g (6.4 and 7.1 lb) but one weighed only 1,625 g (3.6 lb). A female weighed 2,325 g (5.1 lb). The male is the only curassow with a knobbed yellow cere and wattle. Males and females are mostly black with a white lower belly, vent area, and tips of the tail feathers. Females have a black cere and pale barring on the breast and lower belly.
分类信息
The yellow-knobbed curassow was formerly classified as a subspecies of blue-billed curassow (Crax alberti). It is monotypic. A few subspecies previously proposed for it were determined to be hybrids or aberrant individuals and so were not adopted.
- 学名
- Crax daubentoni
- 命名信息
- Gray, GR, 1867
- 目
- Galliformes
- 科
- Cracidae
- 属
- Crax
分布与栖息地
The yellow-knobbed curassow is found in northern Venezuela as far east as Sucre and Monagas states and in immediately adjacent northeastern Colombia. It primarily inhabits gallery forest and tall scrub in the llanos. It also occurs in valleys and ravines in the nearby foothills. In elevation it ranges between 500 and 1,500 m (1,600 and 4,900 ft) in Colombia and 100 and 800 m (330 and 2,600 ft) in Venezuela.
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: declining.
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Streaked Bowerbird
Amblyornis subalaris
A fairly small bowerbird of foothill and lower montane forest. Dull brown color with some subtle streaking on the throat and breast. Male has a long, orange crest flowing from the back of the head. Creates a hutlike bower. Similar to the MacGregor's Bowerbird, but Streaked Bowerbird is found lower down, is smaller and streaked. Call, sounds like a small dog barking “wak!”.
Croaking Cisticola
Cisticola natalensis
Chunky, large-billed, streak-backed cisticola. Brown overall, without bright rufous in the plumage. Males are much larger than females. Found in grassland and savanna with scattered bushes. Song varies geographically but always consists of a rising note with a croaking quality. Larger than Stout Cisticola and lacks a bright rufous crown. Distinguished from most other cisticolas by large size and heavy bill. As with all cisticolas, habitat and voice are important cues in identification.
Saffron-crowned Tanager
Tangara xanthocephala
Small tanager found in Andean subtropical zone from Venezuela to Bolivia. Mostly bluish-green with darker wings and streaked back. Head is mostly bright yellow or orange with small black mask, throat, and nape. Buffy undertail coverts and vent only visible at some angles. Sexes alike. A fairly common member of mixed flocks from around 1,200–2,400 m, in cloud forest and edges.
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