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Boulder Finch

Idiopsar brachyurus
Cassin, J, 1867
Yal Grande

Family: Thraupidae
Order: Passeriformes
Class: Aves
Phylum / Division: Chordata
Kingdom: Animalia

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Records from Santa Ana

Conservation Status according to BirdLife International: Least Concern

Other common names: Diuca Picuda.


Description: Robust bird about 18 cm long, with a large body, short tail, and a notably thick, straight, and pointed bill. Its plumage is uniformly lead-gray throughout the body, slightly paler on the underparts, with a light mottling on both sides of the face. The wings and tail are dark grayish, with whitish edges. The iris is reddish, the legs pink, and the bill grayish. Juveniles are similar but show browner tones, a considerably smaller bill, a paler lower mandible, and more pronounced facial mottling.

Geographic distribution: Andean species with a restricted range, extending from southern Peru and western Bolivia to northwestern Argentina. In the country, it inhabits the provinces of Jujuy, Salta, and Tucumán, with populations in the Sierras de Santa Ana, Aconquija, the Calchaquí Ranges, and Cuesta del Obispo, mainly between 3,000 and 3,600 m a.s.l.

Habitat: Lives in rocky areas, ravines, and slopes with high-altitude grasslands and scattered shrubs of the upper altitudinal belt of the Yungas. It prefers microhabitats with rocky outcrops and humid areas with grasses of the genus Festuca.

Diet: Mainly granivorous. It feeds on seeds, bulbs, shoots, and roots that it searches for on the ground, digging with its powerful bill, usually in pairs (https://www.ecoregistros.org/site/video.php?id=5954). Occasionally, it also includes small arthropods in its diet.

Behavior: Mainly discreet, territorial, and silent. It usually moves by walking or making small hops on the ground or among rocks. It is observed alone or in pairs, sometimes in small family groups, maintaining reserved and stealthy behavior. It remains active on the ground, where it searches for food, or perched with a somewhat upright posture on visible rocks, where it stays for a considerable time and appears calm in the presence of humans.

Nesting: Nests in cavities or crevices of rocky walls along rivers.

Conservation status: Species with a very restricted distribution in Northwestern Argentina, with small, localized, and low-frequency populations. Its presence is limited to specific and hard-to-access high Andean environments, which contributes to its rarity and limited knowledge. In Argentina, it is categorized as Insufficiently Known (IC), while internationally it is listed as Near Threatened (NT), due to its fragmented habitat and the pressures derived from livestock grazing and climate change in highland ecosystems.


Authors of this compilationDiego Carus and Maria Belén Dri - 08/11/2025




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Last published photographs

Foto
Photography ID: 654082
 
Santa Ana
Jujuy
Argentina
08/18/2025
María Alejandra Sosa
Foto
Photography ID: 654015
 
Santa Ana
Jujuy
Argentina
08/18/2025
Jorge La Grotteria
Foto
Photography ID: 654014
 
Santa Ana
Jujuy
Argentina
08/18/2025
Jorge La Grotteria
Foto
Photography ID: 654013
 
Santa Ana
Jujuy
Argentina
08/18/2025
Jorge La Grotteria
Foto
Photography ID: 654012
 
Santa Ana
Jujuy
Argentina
08/18/2025
Jorge La Grotteria
Foto
Photography ID: 651710
 
Santa Ana
Jujuy
Argentina
08/18/2025
María Alejandra Sosa
Foto
Photography ID: 644213
  Adult

Santa Ana
Jujuy
Argentina
07/23/2025
Gustavo Marasco
Foto
Photography ID: 631964
  Adult

Santa Ana
Jujuy
Argentina
04/09/2025
Diego Carus
Foto
Photography ID: 630586
  Adult

Santa Ana
Jujuy
Argentina
04/03/2025
Diego Carus
Foto
Photography ID: 630578
  Adult

Santa Ana
Jujuy
Argentina
04/09/2025
Diego Carus
Foto
Photography ID: 597982
 
Santa Ana
Jujuy
Argentina
08/15/2024
Adrian Braidotti
Foto
Photography ID: 584008
  Adult

Santa Ana
Jujuy
Argentina
04/20/2024
Susana Gomez



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 Reports


 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
234413218/08/202512:56ArgentinaJujuySanta Ana4Jorge La Grotteria
234407318/08/202512:56ArgentinaJujuySanta Ana4María Alejandra Sosa
232492723/07/2025ArgentinaJujuySanta AnaGustavo Marasco
227367609/04/2025ArgentinaJujuySanta AnaDiego Carus
227357508/04/2025ArgentinaJujuySanta AnaMaria Belén Dri
227368403/04/2025ArgentinaJujuySanta AnaDiego Carus
214093415/08/2024ArgentinaJujuySanta AnaAdrian Braidotti
203393820/04/2024ArgentinaJujuyDe San Francisco a Santa Ana, Santa AnaSusana Gomez
Page 1

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Citation recommended:

EcoRegistros. 2026. Boulder Finch (Idiopsar brachyurus) - Species sheet. Acceded from https://www.ecoregistros.org on 10/03/2026.