Asthenes perijana
The Perija Thistletail (Asthenes perijana) is a small, slender, and enigmatic passerine, measuring approximately 16 cm (6.3 inches) in length, known for its distinctive long, graduated, and spiky tail. Its plumage is characterized by an olive-brown to grayish-brown back and wings, contrasting with a striking dark rufous crown and a prominent pale supercilium that extends behind the eye. The underparts are whitish to pale buff, heavily streaked with dusky markings, particularly on the breast a...
This species inhabits dense, humid montane scrub, elfin forest, and the borders of páramo vegetation. It typically occurs at high elevations, generally between 2,200 and 3,100 meters (7,200-10,200 feet).
The Perija Thistletail primarily consumes insects and other small arthropods. It forages by actively gleaning and probing dense foliage, mosses, and twigs.
Perija Thistletails are diurnal and exceptionally elusive, spending most of their time actively foraging within the densest undergrowth. They employ a restless, acrobatic gleaning technique, meticulously searching leaves, twigs, and bark for small invertebrates, often hanging upside down or clamb...
The Perija Thistletail is strictly endemic to the Serranía de Perijá, a mountain range that forms part of the northernmost extent of the Andes, straddling the border between Colombia (Cesar and La Guajira departments) and Venezuela (Zulia state). This species is a resident, non-migratory bird fou...
Endangered
- The Perija Thistletail is one of the most geographically restricted bird species in South America, found only in a single mountain range. - Its name "thistletail" refers to its long, spiky tail feathers, which can appear somewhat stiff and brush-like. - This bird is a high-altitude specialist, ...