Aripuana Antwren
Herpsilochmus stotzi
Recently described Amazonian antwren. Males are gray with a bold white eyebrow and a black crown, wings, and tail. Females have a pale rusty forehead patch. Occurs primarily in white sand forest, but also in humid forest, where it forages in the canopy, often with mixed-species flocks. The song is a rolling trill. The similar Predicted Antwren has a longer song; males have more black on the back and females have a more rusty forehead.
识别特征
The Aripuana antwren is 11 to 12 cm (4.3 to 4.7 in) long and weighs about 11 g (0.39 oz). Adult males have a black crown and nape, a long whitish supercilium, and a black streak through the eye. The rest of their upperparts are gray. Their wings are black with white tips on the coverts and white edges on the flight feathers. Their tail is black with large white feather tips and white edges on the outermost. Their throat is pale creamy white and their breast and belly whitish. Adult females have an orangish forehead and a black crown with white streaks. Their upperparts are gray. Their throat is a creamier white than the male's and the rest of their underparts are whiter than the male's.
分类信息
The Aripuana antwren was first discovered in 1986 and at the time was thought to be a subpopulation of the black-capped antwren (H. atriacapillus). It was recognized as a species and so described in 2013 and recognition by regional and worldwide taxonomic systems followed. Its specific epithet honors the discoverer Douglas Stotz.<p>The Aripuana antwren is monotypic.
- 学名
- Herpsilochmus stotzi
- 命名信息
- Whitney, Cohn-Haft, Bravo, Schunck & Silveira, 2013
- 目
- Passeriformes
- 科
- Thamnophilidae
- 属
- Herpsilochmus
分布与栖息地
The Aripuana antwren was first described from the area between the rios Aripuanã and Machado (the interfluvium) in Rondônia. It is now known somewhat more widely along the right bank of the Rio Madeira and along the Rio Roosevelt in more of Rondônia, southeastern Amazonas, and northwestern Mato Grosso. It primarily inhabits old-growth campinarana forest on nutrient-poor soil. The trees seldom exceed 20 m (66 ft) in height. It also occurs in tall undisturbed terra firme where it favors areas with Lepidocaryum tenue palms.
- 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
Japanese Robin
Larvivora akahige
Small migratory songbird of mature forest with distinctive orange breast and dull brown upperparts. Sticks to undergrowth in both montane breeding grounds and lowland wintering grounds, though presence in the former may be given away by its loud song: a trill following a single introductory note. Forages on the ground and prefers to stick to shady areas. Occasionally found in parks and gardens on migration.
Eared Grebe
Podiceps nigricollis
Small, compact grebe with thin pointed bill. Breeding adults mostly black with chestnut flanks; look for wispy golden plumes on cheek and peaked head shape. In winter, grayish overall with a dark cap blending into the dark cheek, and a smudgy dark neck. Red eye visible at close range. Breeds on marshy ponds and lakes; during migration and winter, often seen on large lakes, bays, and open ocean. Compare with Horned Grebe, especially in winter. Eared is thinner-necked and smaller-headed, with more peaked crown, darker cheek, and no pale tip on bill.
Western Orphean Warbler
Curruca hortensis
Large warbler with a dark head contrasting with white throat. Pale eye in adults. Told from Eastern Orphean Warbler by its browner (not gray) back and plain buffy (not spotted) undertail. Breeds in deciduous woodland and tall scrub, orchards, abandoned gardens, and riverine belts. Spends the non-breeding season in dry open habitats with sparse trees and scrubby plant cover. Song is simple and quite different from Eastern: "Turu turu turu turu.... liru liru turu." Call is a clicking "teck."
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