Common Miner
Geositta cunicularia
Widespread but often local in open areas typically with sandy soil from Patagonian steppe to coastal dunes to bogs in the high Andes; often less common than other miners in the same areas. Often seen in pairs, walking with a waddling gait and pumping its tail like most miners. Best identified by distinct breast streaking, relatively long and very slightly decurved bill, and (in flight) bright rusty wing patches. Northern populations also have contrasting creamy white rump. Song varies geographically.
识别特征
The common miner is a medium-size member of its genus. It is 14 to 17 cm (5.5 to 6.7 in) long and weighs 20 to 34 g (0.71 to 1.2 oz). The sexes are alike. The nominate subspecies G. c. cunicularia has a pale brownish face with a wide whitish supercilium and a vague darker "moustache" and line behind the eye. It has a dull grayish brown crown and upperparts; the former has dark brown spots. Its uppertail coverts are dull grayish brown with pale brownish tips. Its tail feathers have buff-whitish bases and blackish ends with pale rufescent between them. The pale area is progressively larger from the innermost to the outer feathers and the outermost have almost entirely white outer webs. Dull brownish wing coverts with pale buff tips form distinct wing bars. Its flight feathers are dull brownish with a wide pale rufous band. Its throat is whitish, its breast buff-white with wavy brownish streaks, its belly pale buffy whitish with a pale cinnamon tinge on the flanks, and its undertail coverts whitish. Its iris is brown to yellowish brown, its medium-length bill is black to brown with sometimes a pale base to the mandible, and its legs and feet are dark gray to black.<p>The other subspecies of the common miner differ from the nominate and each other thus:
分类信息
Taxonomists assign these nine subspecies to the common miner:<p>Subspecies G. c. juninensis, G. c. titicacae, and G. c. frobeni might instead be members of a separate species. Subspecies G. c. georgei and G. c. deserticolor might also be members of another separate species.<p>Among members of genus Geositta, the common miner is most closely related to the slender-billed miner (G. tenuirostris).
- 学名
- Geositta cunicularia
- 命名信息
- (Vieillot, 1816)
- 目
- Passeriformes
- 科
- Furnariidae
- 属
- Geositta
分布与栖息地
The subspecies of the common miner are found thus:<p>Though the International Ornithological Committee includes Paraguay in the range of cunicularia, the South American Classification Committee of the American Ornithological Society has no records in that country.<p>The common miner inhabits open landscapes including puna and temperate grasslands, arid lowland scrublands, and moister restinga scrublands. Most are flat to gently sloping and have sandy soils, short grass, and scattered rocks and shrubs. The species' distribution tends to be patchy. In elevation it ranges from sea level to 5,000 m (16,000 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
Yellow-crested Helmetshrike
Prionops alberti
A distinctive black helmetshrike with a bright yellow crown and crest, orange eye-rings, and pink legs and feet. A rare and threatened species restricted to four locations in the Democratic Republic of the Congo, found in pairs and small groups at middle levels and in the canopy of Albertine Rift montane forest. Somewhat similar dark starlings and drongos lack yellow on the head. Poorly known vocalizations are described as a varied bubbling, chattering, and piping and a repeated loud melodious “tlu-uk.”
Black-capped Antthrush
Formicarius nigricapillus
Antthrushes are rotund creatures that walk along the forest floor with a bobbing gait. They have short tails that are usually cocked straight up. Black-headed is very dark overall, browner toward the rear with a blacker head. Also note the teardrop-shaped pale skin around the eye. Secretive and difficult to spot, although sometimes seen walking along forest trails. Far more often heard than seen. Listen for fast whistled song, a fairly long series of notes rising in pitch.
Ringed Teal
Callonetta leucophrys
Small distinctive duck. Males have a pinkish breast that is spotted in black with a rich chestnut wing and a metallic green patch on the flight feathers. Note the blue bill. Females have a striking brown-and-white face pattern, and are mostly brown above and mottled or banded brown below. In flight shows dark wings with white-and-green bands. Occurs in marshes and swamps with abundant vegetation; can be even seen perched on fences or low trees.
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