Gray-bellied Spinetail
Synallaxis cinerascens
Small spinetail, which is largely gray-brown overall with rufous wings and tail contrasting with a black throat patch and pale chin. Very shy; inhabits the interior of humid forest where it is found in dense understory vegetation. The song is a high-pitched series of “teeep-tepeee” notes.
识别特征
The grey-bellied spinetail is 13.5 to 15 cm (5.3 to 5.9 in) long and weighs 10 to 14 g (0.35 to 0.49 oz). The sexes have the same plumage. Adults have blackish lores and a faint gray line behind the eye on an otherwise gray-brown face. Their forehead is dark grayish brown, their crown dark brownish olive, and their back, rump, and uppertail coverts are richer brown. Their wings are mostly rich reddish chestnut. Their tail is dark chestnut; the tips of the feathers have no barbs giving a spiny appearance. Their chin is whitish, their upper throat mottled black and pale gray, and their lower throat black. Their underparts are mostly brownish gray with a paler and grayer center to the belly and browner flanks and undertail coverts. Their iris is reddish brown, their bill black (sometimes with a gray base to the mandible), and their legs and feet greenish gray. Juveniles have a less distinct throat patch than adults and slightly paler underparts with some mottling.
分类信息
The grey-bellied spinetail is monotypic. It and the ochre-cheeked spinetail (S. scutata) are sister species.
- 学名
- Synallaxis cinerascens
- 命名信息
- Temminck, 1823
- 目
- Passeriformes
- 科
- Furnariidae
- 属
- Synallaxis
分布与栖息地
The grey-bellied spinetail is found from the Brazilian states of Goiás, Minas Gerais, and Espírito Santo south through eastern Paraguay and northeastern Argentina's Misiones and Corrientes provinces into northern Uruguay. It inhabits the interior of dense lowland and montane evergreen forest and mature secondary forest; it shuns the forest edges. In elevation it is found from near sea level to 1,150 m (3,800 ft).
- 迁徙
- Resident species
行为
The grey-bellied spinetail is a year-round resident throughout its range.<p>The grey-bellied spinetail feeds on arthropods. It usually forages in pairs, on the ground and in the understorey up to about 2 m (7 ft) above the ground. It gleans its prey from leaf litter and the low vegetation.<p>The grey-bellied spinetail is thought to breed during the austral spring and summer. It is thought to be monogamous. Its nest is a large mass woven of sticks with a tubular entrance that slopes upward to the nest chamber; the chamber is floored with soft leaves. It is placed on the ground in a shallow bowl that the bird scrapes. The clutch size is three eggs. The incubation period, time to fledging, and details of parental care are not known.<p>The grey-bellied spinetail's song is a "very high, piercing 'weeet-sweet' " whose first note is higher than the second.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Monte Yellow-Finch
Sicalis mendozae
Small yellow terrestrial finch-like tanager of the Monte desert of central Argentina. Distinguished from most other Yellow-finches by its uniform bright yellow underparts, and from Saffron Finch by Monte Yellow-Finch’s larger bill and lack of orange in forecrown.
Black-tailed Trogon
Trogon melanurus
Large trogon with a red belly and stout yellow bill. The female has a gray head and chest, while the male is emerald green with a white band separating the chest from its red belly. Note the plain dark gray undertail. Found in canopy and middle levels of lowland forest, mainly in the Amazon basin of northern South America but also in eastern Panama, northern Colombia, and western Venezuela. The similar Slaty-tailed Trogon has a red bill and males lack the white chest band seen on Black-tailed Trogons. Listen for slow series of low-pitched “coop” calls.
Black Oystercatcher
Haematopus bachmani
Large, bulky shorebird. Dark overall with thick red bill, staring yellow eye, and thick, light pink legs. Exclusively coastal, favors rocky shorelines where it feeds on shellfish and other invertebrates. Usually in pairs or small flocks. Occurs from Alaska to northern Baja. Listen for loud yelps and whistles, often in a rapid series when excited. Hybrids with American Oystercatcher occur locally in southern California and Baja; look for messy spotting on the belly.
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