Dusky-capped Woodcreeper
Lepidocolaptes fuscicapillus
Small, slender woodcreeper with a pale curved bill. Heavy white streaking on underparts, but has unstreaked rufous upperparts. Found in humid lowland forests and old second growth, where it forages in the canopy and usually associates with mixed-species flocks. Gives its presence away by its far-carrying song, a descending series of notes: “ti, ti, ti-ti-tee-tee-teh-teh-tutututututu.” Widespread in southern Amazonia, mainly in Brazil and eastern Bolivia.
识别特征
The dusky-capped woodcreeper weighs about 22 to 28 g (0.78 to 0.99 oz). It is a smallish, slim, woodcreeper with a slim decurved bill. The sexes have the same plumage. Adults' crown and nape are grayish brown becoming warm brown on the back. Their wings, uppertail coverts, rump, and tail are brown with a rufous tinge. Their chin and throat are whitish to buffy-white. Their underparts are brown with blackish-edged whitish streaks. Their underwing coverts are rufous-brown. Their iris is dark brown, their bill pale brown with a pinkish tinge and a darker tip on the mandible, and the legs and feet usually blackish slate or grayish. Juveniles are similar to adults with the largest difference being their shorter, straighter, and yellowish bill.
分类信息
Until the 2010s what is now the dusky-capped woodcreeper was considered a subspecies of Lepidocolaptes albolineatus, which was then called the lineated woodcreeper. Starting at that time all but the lineated's nominate subspecies were split from it, eventually resulting in the dusky-capped woodcreeper, the Duida woodcreeper (L. duidae), the Inambari woodcreeper (L. fatimalimae), and a monotypic L. albolineatus which was renamed the Guianan woodcreeper. In the initial split, two subspecies of the lineated woodcreeper, L. a. fuscicapillus and L. a. layardi, were each accorded species status as the "Rondonia" and "Layard's" woodcreepers respectively. In 2020 the two were lumped as the two subspecies of the current dusky-capped woodcreeper.
- 学名
- Lepidocolaptes fuscicapillus
- 命名信息
- (Pelzeln, 1868)
- 目
- Passeriformes
- 科
- Furnariidae
- 属
- Lepidocolaptes
分布与栖息地
The nominate subspecies L. f. fuscicapillus of the dusky-capped woodcreeper is found in the Amazon Basin of northeastern Bolivia and western Brazil, south of the Amazon River in the interfluve of the Madeira and Tapajós rivers. Subspecies L. f. layardi is found south of the Amazon east of the Tapajós. The species mostly inhabits terra firme and floodplain forest. It favors the interior and edges of tall primary forest and mature secondary forest. It is found less often in savanna, and is found only rarely in young secondary forest. It elevation it seldom exceeds 700 m (2,300 ft).
- 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
Yellow-billed Cardinal
Paroaria capitata
A sleek bird with a gray back, white chest and collar, and a bright red head. Immatures look similar to adults, but are brown instead of red. Similar to Red-crested Cardinal, but lacks a crest. Associated with waterside habitats such as forested marshes, flooded fields, riparian scrub and forest, and wooded lakeshores. Relatively tolerant of human disturbance and can be found in waterside towns and cities. Forages on the ground in pairs or flocks. Song is a repetitive ‘chew-wee-chew’ and call is a nasal ‘wee’. Native to South America; introduced to the Hawaiian Islands.
Sad Flycatcher
Myiarchus barbirostris
A woodland species that often perches quietly three to ten meters above the ground; tends to lean forward on its perch. Note its relatively small bill and the lack of rust on the wings and tail. Stolid Flycatcher is larger with a larger bill, and has rust on folded primaries unlike Sad Flycatcher. The Rufous-tailed Flycatcher is larger yet, has a darker gray head and chest, and has more rust on the tail and folded primaries. Vocalizations include an emphatic “pip,” given singly or a rapid series, a whistled trill, and various high twitters and squeaks; calls are often given in combination.
Cory's Shearwater
Calonectris borealis
Large, lumbering shearwater. Diagnostic yellow bill is often visible from quite a long distance. Look for warm pale brown upperparts and clean white belly and underwings. Also note little contrast between the brown head and white throat (compare with distinct capped appearance of Great Shearwater). Lazier wingbeats than other large shearwaters, especially in calm conditions; wings look crooked with wrists pushed forward in flight. Forms mixed flocks with other shearwaters, especially when feeding. Fairly common in warm water in the Atlantic Ocean; increasingly frequent in cooler water, ranging further northward in recent years. Very similar to closely related and recently split Scopoli’s Shearwater. Can be identified with caution, and often by analysis of photographs, by the solidly dark outer part of the underwing.
开始您的观鸟之旅
在户外识别鸟类，并在下一次观察时随手查阅鸟类图鉴。