Dusky-throated Antshrike
Thamnomanes ardesiacus
Small antshrike of lowland rainforest understory. Males are slaty gray overall. Most individuals, but not all, have a ragged black throat patch. Females are dull brown with buffier belly. Shorter-tailed than similar Bluish-Slate and Cinereous Antshrikes, with less upright posture (songs also differ significantly). Smaller-billed than similar Plain-winged Antshrike. One of the most prominent leaders of understory multi-species flocks.
识别特征
The dusky-throated antshrike is 13 to 14 cm (5.1 to 5.5 in) long and weighs 16 to 19 g (0.56 to 0.67 oz). Adult males of the nominate subspecies are mostly darkish gray that is lighter on their belly. They sometimes have a small white patch between their scapulars and often some black feathers on their throat. Their wings and tail are darkish gray with small white tips on the tail feathers. Adult females have dark olive-brown upperparts with more rufous wings and tail. Their throat is buff-white and the rest of their underparts pale buffy ochraceous. Subspecies T. a. obidensis has a shorter tail than the nominate, a black throat, and sometimes some white on the wings.
分类信息
The dusky-throated antshrike was described by the English ornithologists Philip Sclater and Osbert Salvin in 1868 and given the binomial name Dysithamnus ardesiacus. Its current genus Thamnomanes was introduced by the German ornithologist Jean Cabanis in 1847. The name combines the Ancient Greek words thamnos "bush" and -manēs "fond of". The species was moved to Thamnomanes by the early 21st century.<p>The dusky-throated and saturnine antshrike (T. saturminus) were treated as conspecific by many twentieth century authors and now are considered to form a superspecies. <p>The dusky-throated antshrike has two subspecies, the nominate T. a. ardesiacus (Sclater, PL & Salvin, 1868) and T. a. obidensis (Snethlage, E, 1914).
- 学名
- Thamnomanes ardesiacus
- 命名信息
- (Sclater, PL & Salvin, 1868)
- 目
- Passeriformes
- 科
- Thamnophilidae
- 属
- Thamnomanes
分布与栖息地
The nominate subspecies of the dusky-throated antshrike is found east of the Andes from south-central and southeastern Colombia south through eastern Ecuador into eastern Peru and northeastern Bolivia and in far western Brazil's Acre state. Subspecies T. a. obidensis is found from eastern Colombia east through eastern and southern Venezuela and the Guianas, and in northern Brazil from the Rio Negro watershed to the Atlantic and south of the Amazon between the rios Tefé and Purus. The species primarily inhabits the understorey of terra firme evergreen forest and occurs less often in várzea forest. In elevation it reaches 1,050 m (3,400 ft) though only as high as 400 m (1,300 ft) in Colombia and is mostly below 500 m (1,600 ft) in Ecuador.
- 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
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