Striped Owl
Asio clamator
Fairly large, pale, eared owl with honey-colored eyes. Favors savannas and other open areas with scattered trees and bushes, such as cane fields and open plantations. Roosts in dense foliage or on the ground, but often hunts from roadside perches such as utility wires. Note the prominent ear tufts (rarely held flattened), whitish face rimmed with black, and whitish underparts with neat dark streaking. Compare with Short-eared Owl.
识别特征
The striped owl is a relatively large species with prominent tufts of elongated feathers on the crown resembling ears. It is 30–38 cm (12–15 in) long and weighs from 320 to 546 g (11.3 to 19.3 oz). Its head, back, hot wings and tail are brown with black stripes and small markings while its underparts are buff-coloured with heavy black streaking on the breast. The facial disk is pure white with a thin black border.
分类信息
The striped owl was formally described by the French ornithologist Louis Pierre Vieillot in 1808 under the binomial name Bubo clamator. The specific epithet clamator is Latin meaning "shouter". The type locality is Cayenne in French Guiana. The striped owl was at one time placed in its own genus Rhinoptynx and was then transferred to the genus Pseudoscops. A molecular study that compared mitochondrial DNA sequences indicated that it should be placed in the genus Asio. This result was confirmed by a large molecular phylogenetic study of the owls published in 2019.
- 学名
- Asio clamator
- 命名信息
- (Vieillot, 1808)
- 目
- Strigiformes
- 科
- Strigidae
- 属
- Asio
分布与栖息地
The striped owl is native to much of South and Central America. Its range is not well known, perhaps because it is nocturnal and not easily seen, but it is known from Argentina, Belize, Bolivia, Brazil, Colombia, Costa Rica, Ecuador, El Salvador, French Guiana, Guatemala, Guyana, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Suriname, Trinidad and Tobago, Uruguay and Venezuela. It uses a variety of habitats, including riparian woodlands, marshes, savannahs, grassy open areas, and tropical rainforests. It can be found from sea level to an altitude of 1,600 m (5,200 ft) and above.
- 迁徙
- Resident species
保护状况
The striped owl has a very large range and its population is believed to be stable. It faces no particular threats and is classified by the IUCN as least concern.
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Juan Fernandez Petrel
Pterodroma externa
Large, rather long-tailed, and relatively big-billed petrel of offshore subtropical and tropical waters in the eastern and central Pacific; not seen from mainland. Named for Juan Fernandez Islands in Chile, where the species breeds. Main identification features are relatively large size, gleaming white underparts with small black “comma” on bend of underwing, and dark cap blending into gray of hindneck. Upperparts show darker “M” pattern common to many petrels. Much larger than Masatierra Petrel and other small petrels.
European Roller
Coracias garrulus
Spectacular and distinctive: overall brilliant blue, with a rusty back and a stout, crowlike bill; juvenile plumage duller overall. Favors open and semiopen country with scattered trees and wooded patches; often takes larger insects, such as grasshoppers. Mostly seen singly or in small groups, perched on prominent perches, such as bare snags and wires, as well as on the ground. Quiet outside of the breeding season, when birds give harsh rasping calls.
Red-throated Thrush
Turdus ruficollis
This eastern counterpart of the Black-throated Thrush also breeds in montane areas and winters in lower-elevation areas on average. Males gray above and white below, with a brick-red throat and supercilium. Female paler, with more streaking on the breast and light suffusion of red on the face. Streaky and drab young birds can be difficult to distinguish from Black-throated; chestnut outer tail feathers and orange suffusion to the throat area indicate Red-throated. In areas of overlap, beware hybrids that may show features of both species. Pleasant song is simpler than that of Black-throated, and is composed of fluty whistles and trills. Calls include typical “chekchekchek” and high, thin “tseee.”
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