Rufous-capped Motmot
Baryphthengus ruficapillus
Large odd-looking bird with a long tail often swung from side to side or even held cocked when agitated. Usually sits quietly in the midstory and is easy to miss. The body is blue and green, with a black mask, and an orange cap and belly. Normally vocalizes at dawn and dusk an owl-like “hoo-oo-oo-oo-oo.” Nests in burrows.
识别特征
The rufous-capped motmot is 42 cm (17 in) long and weighs 140 to 151 g (4.9 to 5.3 oz). The adults are mostly green above and olive-green below. The crown and nape are rufous and a black "mask" has a turquoise border. The chest has a black spot, there is a rufous band across the belly, and the lower belly is blue-green. The juvenile is similarly colored but duller.
分类信息
The rufous-capped motmot and rufous motmot (Baryphtengus martii) are the only two species in their genus, and have sometimes been treated as conspecific. The rufous-capped motmot is monotypic. Though subspecies have been proposed within its Brazilian population, the differences have been shown to be simply individual variation.
- 学名
- Baryphthengus ruficapillus
- 命名信息
- (Vieillot, 1818)
- 目
- Coraciiformes
- 科
- Momotidae
- 属
- Baryphthengus
分布与栖息地
The rufous-capped motmot is found across southeastern Brazil, in eastern Paraguay, and in far northeastern Argentina. It inhabits primary and gallery forest, the latter mostly along watercourses. It ranges in elevation from near sea level to 1,200 m (3,900 ft).
- 迁徙
- Resident species
行为
The rufous-capped motmot's diet is cosmopolitan. It includes insects and their larvae; spiders; snails; small reptiles, mammals, and birds; and to a lesser degree fruits. The species has been observed following army ants to capture what they disturb and also sometimes forages in mixed-species flocks.<p>The rufous-capped motmot nests in a burrow in an earth bank; it either digs its own or uses an abandoned burrow dug by another animal such as an armadillo. The burrow can be more than 1 m (3.3 ft) long. The species lays two or three eggs, probably in September and October based on when nestlings and young have been observed. Both sexes feed the young.<p>The rufous-capped motmot vocalizes mostly before dawn and at dusk. Its makes a "series of 'hoo-oo-oo-oo-oo' notes" that have been compared to owl calls [1].
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Finsch's Euphonia
Euphonia finschi
Small finch of forest canopy; often seen perched on bare branches. Males have yellow forecrown and belly contrasting with dark throat; females mostly dull yellow and green. Usually in pairs or small groups; may sit motionless for long periods before flying off into the distance. Found in a variety of forest types including coastal and savanna forest; usually in the canopy and at fruiting trees. Frequently heard call a plaintive, doubled whistle. Male is very similar to Purple-throated Euphonia but more richly colored below; female is similar to Violaceous Euphonia and best distinguished by attendant males.
Sulphur-rumped Tanager
Heterospingus rubrifrons
Drab medium-gray tanager with lemon-yellow rump. Also look for fluffy white patch at the side of the breast, just under the bend of the wing. Fairly thick bill. Sexes alike. Usually seen in the forest canopy with mixed-species flocks, often in pairs.
Golden Whistler
Pachycephala pectoralis
Compact songbird with short bill. Males in much of range are olive above, yellow below, with white throat set in black head; males and females on Norfolk Island are olive-brown with yellowish underparts (brightest on undertail). Females vary across range, with eastern birds having some amount of yellow on the underparts and western birds (formerly treated as full species, “Western Whistler”) being gray-brown above and pale below, lacking yellow. Olive Whistler much browner below, with well-defined whitish bib. Inhabits a great variety of habitats. Bright, whistled song varies, but often has a whip-like ending.
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