Opal-rumped Tanager
Tangara velia
Common tanager, found in a variety of forest habitats. Usually seen from below, in which case it is best identified by uniform dark underparts with rufous lower belly and undertail coverts, and active behavior. The shining white rump can be seen from most angles on perched birds, even when high overhead. Found in tall rainforest, shorter-stature forests on sandy soils, and in disturbed areas. Groups move rapidly through treetops, usually with other species of small tanagers, feeding on fruit. Calls are indistinct chips, often given in rapid series in flight.
分类信息
In 1743 the English naturalist George Edwards included an illustration and a description of the opal-rumped tanager in his A Natural History of Uncommon Birds. He used the English name "Red-belly'd Blue-bird" ". Edwards based his hand-coloured etching on a specimen owned by the Duke of Richmond that had been collected in Suriname. When in 1758 the Swedish naturalist Carl Linnaeus updated his Systema Naturae for the tenth edition, he placed the opal-rumped tanager with the wagtails in the genus Motacilla. Linnaeus included a brief description, coined the binomial name Motacilla velia and cited Edwards' work. Linnaeus provided no explanation for the specific epithet; it is perhaps a misprint for the Ancient Greek elea, a small bird mentioned by Aristotle. The bay-headed tanager is now placed in the genus Tangara that was introduced by the French zoologist Mathurin Jacques Brisson in 1760. The type locality is Suriname.<p>Four subspecies are recognised:
- 学名
- Tangara velia
- 命名信息
- (Linnaeus, 1758)
- 目
- Passeriformes
- 科
- Thraupidae
- 属
- Tangara
分布与栖息地
- 迁徙
- Resident species
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Black-and-gold Tanager
Bangsia melanochlamys
Colorful and rather chunky tanager with a stout bill. It is endemic to Colombia, where it inhabits cloud forest in the western Andes as well as the northern end of the central Andes. Plumage is black with an orange breast, yellow belly, and blue shoulders. Similar to Golden-chested Tanager, but yellow on underparts is much more extensive. Usually seen in middle to upper levels of the forest, sometimes with mixed species flocks. Song, often given from an exposed perch, is a rasping “pit-zhee” that may be given several times in quick succession.
Blue-footed Booby
Sula nebouxii
Large seabird of inshore waters, often seen from beaches but not usually up close. Adult has streaky brown-and-white neck and bright blue feet. Immature has dusky brownish head and neck and grayish feet. All plumages told from Brown Booby by white at the base and tip of the tail. Typically flies and soars fairly high up. Feeds by spectacular, steep-angle plunge-dives. Breeds locally in colonies on offshore islands, nesting on the ground. Most well-known from the Galapagos but occurs extensively along the Pacific coast of Middle and South America, especially in the Gulf of California.
Small-billed Elaenia
Elaenia parvirostris
A fairly small and very dull-looking flycatcher. Grayish brown above and whitish below with a thin white eyering, three pale wingbars, and pinkish base to the bill. Note the round head with only a very slight crested appearance. Found in woodlands and edges up to around 1,200 m. Breeds from southern Brazil to central Argentina, migrating north in the austral winter to far northern South America. Extremely similar to White-crested Elaenia, which tends to show a less obvious eyering and has only two wingbars. Note vocalizations, which include a slightly burry “wh’eer” call, a fast complex “tweedle-twee,” and single “pip” notes.
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