Xenospingus concolor
The Slender-billed Finch, *Xenospingus concolor*, is a distinctive and enigmatic passerine belonging to the family Thraupidae, often considered part of the tanager and allied species group. This medium-sized finch measures approximately 13.5-15 cm (5.3-5.9 inches) in length and weighs around 15-20 grams, presenting a subtly elegant, monochrome appearance. Its plumage is largely uniform slate-grey above, transitioning to paler grey on the underparts. A key diagnostic field mark is its unusuall...
This specialized finch primarily inhabits arid to semi-arid scrublands and dense thickets, particularly near streams or wetlands, within Andean valleys at elevations typically between 1,500 and 3,000 meters.
Primarily insectivorous, this finch expertly gleans small invertebrates from dense foliage and probes for hidden prey using its uniquely slender bill, occasionally supplementing its diet with seeds.
The Slender-billed Finch is generally a shy and inconspicuous species, often observed foraging solitarily or in pairs, though small family groups can be seen post-breeding. It actively gleans insects from foliage and probes into crevices with its unique bill, frequently perching low in dense scru...
The Slender-billed Finch is endemic to the arid intermontane valleys of the central Andes, with its primary distribution found in west-central Peru and northern Chile. In Peru, its range extends from Ancash south through Lima, Ica, Arequipa, and Moquegua departments, typically near coastal hills ...
Near Threatened
- Its genus name, *Xenospingus*, translates to "strange finch," highlighting its unusual characteristics among finches. - The Slender-billed Finch's distinctive bill is longer and more slender than any other true finch in South America, a prime example of evolutionary specialization. - It is a mo...