Ocellated Woodcreeper
Xiphorhynchus ocellatus
A medium-sized woodcreeper, found primarily in western Amazonia, south of the Amazon river. Lacks any truly distinctive visual features. Shows variable buffy streaking on head, back, and breast, and a scaly buffy throat. Bill is rather straight and typically dark grayish or silvery. Most easily identified by voice, a descending series of rather nasal notes, sometimes with a stuttered pattern. Typically seen singly or in pairs, often accompanying mixed-species flocks in the understory or mid-levels. Occurs in the lowlands and into the foothills of the Andes, usually in mature forest.
识别特征
The ocellated woodcreeper is 20 to 24.5 cm (7.9 to 9.6 in) long and weighs 24 to 42 g (0.85 to 1.5 oz). It is a slim, medium-sized woodcreeper with a long and nearly straight bill. The sexes are alike. Adults of the nominate subspecies X. o. ocellatus have a dark brown crown and nape with fine buff streaks on the crown. Their back is plain reddish brown to olive-brown, their rump and wings cinnamon-rufous, and their tail a darker cinnamon-rufous. Their throat is deep buff with darker edges to the feathers. Their underparts are olive-brown that becomes more rufescent on the undertail coverts. Their upper breast has large buff "teardrops" with weak darker borders, their lower breast has weak buff streaks, and their belly is unmarked. Their iris is dark brown, their bill blackish with a pale gray mandible, and their legs and feet gray. Juveniles are similar to adults but with heavier markings on their underparts.<p>The other subspecies of the ocellated woodcreeper differ from the nominate and each other thus:
分类信息
The ocellated woodcreeper's taxonomy is unsettled. The South American Classification Committee of the American Ornithological Society (SACC) and the Clements taxonomy have long treated it as a species with seven subspecies. The International Ornithological Committee (IOC) formerly treated it as a species with four subspecies; the other three were treated as Tschudi's woodcreeper (X. chunchotambo). In July 2023 the IOC lumped Tschudi's into the ocellated woodcreeper, resulting in the same treatment as that of the SACC and Clements.<p>The seven subspecies recognized by these taxonomic systems are:<p>However, BirdLife International's Handbook of the Birds of the World (HBW) considers only X. o. perplexus and X. o. ocellatus as the ocellated woodcreeper. It retains X. o. napensis, X. o. chunchotambo, and X. o. brevirostris as Tschudi's woodcreepr and treatsX. o. lineatocapilla and X. o. beauperthuysii as the line-crowned woodcreeper.<p>This article follows the single species, seven-subspecies, model.
- 学名
- Xiphorhynchus ocellatus
- 命名信息
- (Spix, 1824)
- 目
- Passeriformes
- 科
- Furnariidae
- 属
- Xiphorhynchus
分布与栖息地
The subspecies of the ocellated woodcreeper are found thus:<p>The ocellated woodcreeper primarily inhabits evergreen forest. Most of the subspecies favor terra firme forest and are also found in várzea, other seasonally flooded forest types, and wooded swamps. The three "Tschudi's" subspecies are found in terra firme but are more common in montane forest and cloudforest. All prefer the interior of mature forest but also occur at its edges and in secondary forest. The species mostly occurs at elevations below 500 m (1,600 ft) but reaches 1,800 m (5,900 ft) in the Andes.
- 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
Great-winged Petrel
Pterodroma macroptera
A medium-sized, bulky dark petrel with a large head and long pointed wings. It often shows a grizzled, gray scaly muzzle around the bill. It flies fast with a flexed wrist and its heavy head angled downward, giving it a characteristic appearance. It breeds on subantarctic islands between the Tristan group and western Australia, dispersing across the southern oceans between 30 and 50°S, where it is a deep ocean specialist. Several species are similar to Great-winged Petrel. Gray-faced Petrel, sometimes considered the same species, breeds off New Zealand and is almost identical except for a more extensive grizzled face patch. The smaller Kerguelen Petrel has a more contrasting silvery underwing. The gadfly petrels mostly have more pale patterning on the underwing or belly and lack the bulkiness of Great-winged Petrel.
Olive Woodpecker
Dendropicos griseocephalus
Unusual woodpecker that lacks barring, spotting, and streaking. Males have a red cap, and both sexes show a red rump that is conspicuous in flight. Varies geographically; some populations show a red patch at the center of the belly and others a completely olive belly. Found in forest and dense woodland. Restricted to middle and high elevations across much of the range, though found down to sea level in South Africa. Call is a series of loud whinnies.
Omao
Myadestes obscurus
A plump thrush of dense native forests above 3,000 feet elevation on the eastern side of Hawaii Island. Also occurs sparsely in high montane shrubland. Shy and unobtrusive; may sit motionless for extended periods in the understory or high in the canopy. Has peculiar habit of quivering wings when perched. More easily heard than seen. Song, sometimes given from an exposed perch, is a series of loud, jerky phrases. Calls include a loud whistle and a series of ascending flute-like notes.
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