Patagonian Mockingbird
Mimus patagonicus
Fairly common in Argentine Patagonia, but local and scarce in southern Chile. Favors semiopen habitats, from shrub-steppe to farmland with hedges and shrubby patches. Often perches atop bushes and on roadside wires and posts. Runs well on the ground, usually with tail cocked; at times can be rather elusive, skulking in bushes. Identified by bold pale eyebrow, buffy-gray underparts, white wingbars, and white tail corners; compare with White-banded Mockingbird, which has much more white in wings and tail.
识别特征
The Patagonian mockingbird is 22 to 25 cm (8.7 to 9.8 in) long. Males weigh 44.4 to 61.8 g (1.57 to 2.18 oz) and females 43.8 to 65.4 g (1.54 to 2.31 oz). Adults have a brown crown, a whitish supercilium, and a blackish line through the eye. Their upperparts are plain grayish brown that is paler on the rump. The wings are blackish and show two thin pale bars when folded. Their tail is blackish except for the white outer edge of the outermost feathers and white tips on the others. They are a buffy gray below that is paler on the throat and belly. The juvenile is essentially the same with the addition of blackish spots on the breast.
分类信息
The Clements taxonomy and BirdLife International consider the Patagonian mockingbird to be a sister species to the Chilean mockingbird (Mimus thenca). The International Ornithological Committee (IOC) does not treat them as that closely related. The Patagonian mockingbird is monotypic.
- 学名
- Mimus patagonicus
- 命名信息
- (d'Orbigny & Lafresnaye, 1837)
- 目
- Passeriformes
- 科
- Mimidae
- 属
- Mimus
分布与栖息地
The Patagonian mockingbird is a year round resident of northwestern and central Argentina. It breeds in southern Argentina and southern Chile as far as the Strait of Magellan and in the non-breeding season migrates north to central and somewhat into northeastern Argentina. It is a casual visitor to Tierra del Fuego and has been recorded in the Falkland Islands.<p>The Patagonian mockingbird generally inhabits open shrublands and bushlands including the Patagonian steppe. In southeastern Argentina, it is also found in somewhat open woodland. In elevation it ranges from sea level to 1,800 m (5,900 ft).
- 迁徙
- Complete migrants
行为
The Patagonian mockingbird feeds mostly on the ground. In the breeding season its primary diet is insects and it adds fruits and berries in the non-breeding season.<p>The Patagonian mockingbird breeds in January in northern Argentina and between October and December in Chile. It is monogamous and appears to be territorial. Family groups stay together in the non-breeding season. Its nest is an open cup made of twigs and lined with softer materials and is placed low in vegetation. The clutch size varies from three to six.<p>The Patagonian mockingbird sings continuously for long periods from an open perch or from within vegetation, "a warbling series of varied notes and phrases". It mimics other species.
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Caracas Tapaculo
Scytalopus caracae
A typical tapaculo, in bad light a plain and dark small bird with short tail. In good view, mostly plain dark gray with brown and slightly barred belly. Female more barred than male, and juvenile mostly brown and markedly barred. Acts like a mouse, staying near the ground in dense understory of bamboo thickets in cloud forest. Song nasal and noisy, one of the signature sounds in the mountains near Caracas; one version a series of four notes “wu-E-e-wu” and the another a faster series of 6 notes “wu-wU-e-e-wu-wu”; varied calls, the most common a descending mechanical rattle. The only tapaculo in its limited range in the Coastal Cordillera of Venezuela.
Tapajos Hermit
Phaethornis aethopygus
Tiny rufous hummingbird with a curved bill and a yellow lower mandible. Note the prominent white bases to the outer tail feathers. Males have black cheeks and throat, a broad pale eyebrow, a rufescent green back, and a rusty rump and underparts. Females have less black on the throat and more rufescent underparts. Occurs in humid forest, where it forages in the understory.
Woodpecker Finch
Camarhynchus pallidus
A drab Galápagos finch with a stretched-out-looking bill. It has tan upperparts and pale whitish or yellowish underparts that may have a small amount of streaking. A small number of birds on San Cristóbal have dark hoods. Stout and elongated bill is pure black on breeding male, partly black on non-breeding male, and pale orange on female. Best identified by bill shape and behavior. It creeps along branches peering around for and probing into cavities, and it sometimes taps like a woodpecker. One of very few tool-using animals, it uses twigs and thorns to extract prey from holes in branches. Found on most islands but absent from Española, Genovesa, Marchena, Pinta, Darwin, and Wolf.
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