Hudson's Canastero
Asthenes hudsoni
Distinctive, heavily streaked ovenbird with a long spiky tail. Note the thin black streaks on the flanks. Found deep inside stands of tall grass and sedges near marshy areas, including in sand dune systems. The song is an ascending trill.
识别特征
Hudsons' canastero is about 18 cm (7.1 in) long. It is one of several streaked canasteros that have drab plumages with dark stripes on their upperparts. It has a long bill. The sexes have the same plumage. Adults have narrow pale buff supercilium on an otherwise sandy brownish face. Their crown and upperparts are sandy brown with conspicuous blackish and silvery streaks. Their wing's greater coverts are dark brown with whitish tips and their median and lesser coverts dark brown with wide rufous edges. Their flight feathers are dark fuscous with whitish-tawny bases on the primaries and tawny-rufous bases on the secondaries. Their tail is dusky with conspicuous silvery buff edges to the feathers. Their chin is whitish, often with a yellow tinge and sometimes an orange-rufous one. Their throat, breast, and belly are buff that is richer on their sides, flanks, and undertail coverts. Their flanks have blackish streaks. Their iris is light brown, their maxilla fuscous black, their mandible pale horn to gray with a blackish tip, and their legs and feet light brownish. Juveniles have blackish-brown streaks on their breast and sides.
分类信息
Hudson's canastero is monotypic. It and the similar austral canastero (A. anthoides) are sister species.<p>The English name and specific epithet of Hudson's canastero honor the Argentine-British naturalist and author William Henry Hudson.
- 学名
- Asthenes hudsoni
- 命名信息
- (Sclater, PL, 1874)
- 目
- Passeriformes
- 科
- Furnariidae
- 属
- Asthenes
分布与栖息地
Hudson's canastero is found in the southeastern part of far southern Brazil's Rio Grande do Sul state, and Uruguay, and in eastern Argentina from Santa Fe and Entre Ríos provinces south to Buenos Aires Province. It inhabits temperate grasslands usually near marshes, both fresh and brackish. It favors areas with tall grasses such as Paspalum quadrifarium and sedges interspaced with short turf or bare ground. In elevation it ranges from sea level to 950 m (3,100 ft).
- 迁徙
- Complete migrants
行为
Migration pattern: Complete migrants.
保护状况
Population trend: declining.
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Gray-crowned Flatbill
Tolmomyias poliocephalus
Small, stocky flycatcher with broad, flat bill. Occupies canopy and midstory of forest edges, gardens, and tall second growth in humid lowlands. Has gray crown, pale yellow underparts, and yellow edgings to wing feathers (but not wingbars). Very similar to a few other species of flycatchers, particularly Yellow-margined and Yellow-olive Flycatchers; best distinguishing features include its pale eye, lack of a yellow patch at the base of the primaries, and voice. Call is a loud, quickly rising whistle: “tuee?”, higher and cleaner than similar calls from species like Brownish Twistwing and Blue-backed Manakin, but not as high as the “twee-twee” of Purple-throated Euphonia.
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Small scrubwren with white eyebrow and pale iris. Has a dark face with a clear white eyebrow and chin stripe. Primarily olive-brown with a black-and-white shoulder patch and paler front. Chin is white with fine black streaking on breast and upper belly. This species is found in southwestern Australia, across the southern coast, to its eastern-most location along Spencer Gulf just north of Adelaide. Found in a wide range of habitats but typically only present where there is reasonably thick undergrowth. It often makes a grumpy buzzing call but also sings a clear musical song. Formerly considered a subspecies of White-browed Scrubwren.
Tres Marias Hummingbird
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Small hummingbird endemic to the Marías archipelago, located about 60 miles off the Pacific coast of central Mexico. Male is glittering green with and iridescent throat and bright red bill. Female is gray underneath with a dark mask bordered with white, and red at the base of her bill. The only other hummingbird on the islands is the very different Cinnamon Hummingbird. Inhabits scrub, woodland, and gardens on all four of the islands.
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