Perijastachelflügel

Bestimmung

The Perija thistletail is 19 to 22 cm (7.5 to 8.7 in) long and weighs 16 to 21 g (0.56 to 0.74 oz). The sexes have the same plumage. Adults have a faint grayish supercilium. Their crown, back, rump, and tail are grayish olive-brown. Their wings are grayish olive-brown with chestnut on the coverts and the base of the flight feathers. Their tail is long and deeply forked with few barbs at the feather ends that give a ragged appearance. Their chin has a cinnamon-buff patch. Their throat and the rest of their underparts are brownish gray. Their iris is reddish brown, their maxilla black, their mandible grayish with a black tip, and their legs and feet gray.

Taxonomie

The Perija thistletail was long treated as a subspecies of the white-chinned thistletail (then Schizoeaca fuliginosa, now Asthenes fuliginosa) but was eventually separated as a species. They and several other species were in genus Schizoeaca but genetic data showed that the genus is embedded within Asthenes. The Perija thistletail is monotypic.

Wissenschaftlicher Name

Asthenes perijana

Autorität

(Phelps, WH Jr, 1977)

Ordnung

Passeriformes

Familie

Furnariidae

Gattung

Asthenes

Verbreitung und Lebensraum

The Perija thistletail is found only in the Serranía del Perijá, a mountain range that straddles the border between northeastern Colombia and northwestern Venezuela. It primarily inhabits páramo grasslands, the upper edge of cloudforest, and dense undergrowth at tree line. In elevation it ranges between 2,950 and 3,400 m (9,700 and 11,200 ft).

Zugverhalten

Resident species

Verhalten

The Perija thistletail is believed to be a year-round resident throughout its range.<p>The Perija thistletail feeds mostly on arthropods and occasionally adds berries to its diet. It forages in the undergrowth, usually singly or in pairs. It is believed to forage by gleaning prey from foliage and branches.<p>The Perija thistletail's breeding season has not been defined but includes July. Nothing else is known about the species' breeding biology.<p>The Perija thistletail's song is "some 3-5 drawn out high-pitched 'pee' notes followed by a short descending dry trill".

Schutzstatus

Bestandstrend

declining