Bolivianischer Erdgräber

Bestimmung

The Bolivian earthcreeper is about 16 cm (6.3 in) long and weighs 22 to 26 g (0.78 to 0.92 oz). It is a small earthcreeper with a long and very slightly decurved bill. The sexes' plumages are alike. Adults have a wide buff supercilium on a mostly dark brownish face. Their crown is dark brown, their back and rump rich brown, and their uppertail coverts reddish brown. Most of their tail feathers have rufous-chestnut bases that blend to fuscous brown ends; the outermost pair are entirely rufous-chestnut. Their wings are rich brown with dark rufous bases on the flight feathers. Their throat and cheeks are white. Their breast and belly are pale cinnamon-buff, their flanks rufescent brown, and their undertail coverts dull rufous. Their iris is brown, their maxilla blackish, their mandible pale with a blackish tip, and their legs and feet brownish-olive or gray.

Taxonomie

Wissenschaftlicher Name

Tarphonomus harterti

Autorität

(Berlepsch, 1892)

Ordnung

Passeriformes

Familie

Furnariidae

Gattung

Tarphonomus

Verbreitung und Lebensraum

The Clements taxonomy places the Bolivian earthcreeper only in the Andes of the southern Bolivian departments of Cochabamba, Santa Cruz, and Chuquisaca. The IUCN also places it only in Bolivia. The International Ornithological Committee and the South American Classification Committee of the American Ornithological Society extend its range in northern Argentina.<p>The Bolivian earthcreeper inhabits arid montane scrublands that include short deciduous woodland. In elevation it ranges between 1,400 and 3,000 m (4,600 and 9,800 ft).

Zugverhalten

Resident species

Verhalten

The Bolivian earthcreeper is a year-round resident throughout its range.<p>The Bolivian earthcreeper's diet is almost entirely arthropods but it has also been recorded feeding on tiny molluscs. It usually forages alone as it gleans and probes for prey on the ground and in rock crevices.<p>Nothing is known about the Bolivian earthcreeper's breeding biology, though it is assumed to nest during the austral summer.<p>The Bolivian earthcreeper's song is "a series of 7–15 loud, dry, clear, penetrating 'zeet' notes that increase in intensity, descend in pitch, ending in chatter". Its call is "a sharp 'bzeeeeeep' or 'dzyoot', repeated frequently". It also makes a "rodent-like, wheezy, piercing whistle, 'dzeea' ".

Schutzstatus

Bestandstrend

declining