Asthenes ayacuchensis
The Ayacucho Thistletail, *Asthenes ayacuchensis*, is a distinctive and localized member of the Furnariidae family, native to the high Andes of south-central Peru. Measuring approximately 17 cm (6.7 inches) in length and weighing around 15 grams, this species is characterized by its dull rufous-brown upperparts, paler underparts, and a prominent rufous crown that contrasts subtly with a paler supercilium and dark lores. Its most striking field mark, shared with other thistletails, is a long, ...
This thistletail inhabits arid to semi-arid montane scrubland, particularly on rocky slopes with dense bushes and ravines, typically at elevations between 3,000 and 4,000 meters (9,800-13,100 feet).
The Ayacucho Thistletail primarily feeds on small arthropods, including various insects and spiders, which it gleans from dense vegetation and bark.
Ayacucho Thistletails are generally secretive and active, spending their days foraging within dense, often thorny, vegetation. They typically move alone or in pairs, rarely joining mixed-species flocks, and are known for their rapid, almost mouse-like movements through tangles. Foraging involves ...
The Ayacucho Thistletail is strictly endemic to the intermontane dry valleys of the Andes in south-central Peru. Its distribution is concentrated primarily within the regions of Ayacucho and Apurímac, specifically found along the valleys of the Río Pampas and its various tributaries, as well as p...
Least Concern
- The Ayacucho Thistletail is one of Peru's many endemic bird species, found nowhere else on Earth. - Its common name, 'Thistletail,' refers to the unique structure of its tail feathers, which are stiff, pointed, and spiny, resembling the bristles of a thistle. - This species was formally describ...