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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 de Valle Grande

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: 659613
  Adult

Santa Ana de Valle Grande
Jujuy
Argentina
10/15/2025
Lucas Sanz
Foto
Photography ID: 659595
  Adult

Santa Ana de Valle Grande
Jujuy
Argentina
10/15/2025
Enrique Sanz
Foto
Photography ID: 630703
  Adult

Santa Ana de Valle Grande
Jujuy
Argentina
04/09/2025
Maria Belén Dri
Foto
Photography ID: 630676
  Adult

Santa Ana de Valle Grande
Jujuy
Argentina
04/09/2025
Diego Carus
Foto
Photography ID: 551570
  Adult

Santa Ana de Valle Grande
Jujuy
Argentina
09/30/2023
Pablo Alberto Re
Foto
Photography ID: 530747
  Adult

Santa Ana de Valle Grande
Jujuy
Argentina
03/24/2023
Pablo Alberto Re
Foto
Photography ID: 530746
  Adult

Santa Ana de Valle Grande
Jujuy
Argentina
03/24/2023
Pablo Alberto Re
Foto
Photography ID: 530745
  Adult

Santa Ana de Valle Grande
Jujuy
Argentina
03/24/2023
Pablo Alberto Re
Foto
Photography ID: 485841
  Adult

Santa Ana de Valle Grande
Jujuy
Argentina
02/27/2022
Maria Belén Dri
Foto
Photography ID: 485839
  Juvenile

Santa Ana de Valle Grande
Jujuy
Argentina
02/27/2022
Maria Belén Dri
Foto
Photography ID: 485702
  Juvenile

Santa Ana de Valle Grande
Jujuy
Argentina
02/26/2022
Diego Carus



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Last Vocalizations published



Audio playerUserDateCountryProvincePlaceSexLife stageIt was observedDetails
Diego Carus01/12/2022ArgentinaJujuySanta Ana de Valle GrandeIndistinguishableFledglingNoNo



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Last Filmings published





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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
238604315/10/2025ArgentinaJujuyAbra de Santa Ana, Santa Ana de Valle GrandeLucas Sanz
238602515/10/2025ArgentinaJujuyAbra de Santa Ana, Santa Ana de Valle GrandeEnrique Sanz
227382309/04/2025ArgentinaJujuyAbra de Santa Ana, Santa Ana de Valle GrandeMaria Belén Dri
227378709/04/2025ArgentinaJujuyAbra de Santa Ana, Santa Ana de Valle GrandeDiego Carus
228144306/04/2025ArgentinaJujuySanta Ana de Valle GrandeDiego Carus
189454630/09/2023ArgentinaJujuySanta Ana de Valle GrandePablo Alberto Re
189271526/09/2023ArgentinaJujuySanta Ana de Valle Grande1Hugo Caverzasi
174289524/03/2023ArgentinaJujuyAbra de Santa Ana, Santa Ana de Valle GrandePablo Alberto Re
156000428/02/2022ArgentinaJujuySanta Ana de Valle GrandeDiego Carus
155767027/02/2022ArgentinaJujuyAbra de Santa Ana, Santa Ana de Valle GrandeMaria Belén Dri
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.