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Rufous Hornero

Furnarius rufus
(Gmelin, JF, 1788)
Hornero
João-de-barro

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

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Records from Delta del Paraná

Conservation status according to BirdLife International: Least Concern

Other common names: Alonsito, Caserito.

Synonyms: Merops rufus.

Subspecies:


Description: It is a medium-sized passerine bird, easily recognized by its predominantly rufous-brown plumage, slightly darker wings, and paler throat. The body is sturdy, with a short tail and a strong, straight bill well adapted for ground foraging. Its compact appearance and upright posture are especially noticeable when walking across open areas.

Geographic distribution: It is widely distributed across central and southern South America, including Argentina, Uruguay, Paraguay, Bolivia, southern Brazil, and parts of eastern Chile. The species is very common throughout much of its range, particularly in lowland temperate regions, where it remains present year-round.

Habitat: It inhabits a wide variety of open and semi-open environments, such as grasslands, savannas, agricultural fields, rural areas, and urban settings. It shows remarkable adaptability to human-altered landscapes and is frequently observed in gardens, parks, and near buildings.

Feeding: Its diet is mainly insectivorous, consisting of insects, larvae, spiders, and other small invertebrates collected while walking on the ground. Occasionally, it may consume small amounts of plant material. Foraging is active, often involving probing and turning over soil with the bill.

Behavior: It is a territorial and generally monogamous bird, usually seen alone or in pairs. The species is notably tolerant of human presence and is well known for its loud, repetitive song, which plays an important role in territorial defense and pair communication.

Nesting: It builds one of the most distinctive nests among South American birds: a mud structure shaped like an oven, with a lateral entrance leading to an inner chamber. Both members of the pair participate in nest construction, which is typically placed on posts, trees, buildings, or artificial structures. The usual clutch consists of 3 to 4 eggs, incubated by both adults.

Conservation status: It is classified as Least Concern, owing to its broad distribution, large population size, and high adaptability to human-modified environments.


Author of this compilation: EcoRegistros – 20/12/2025

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Last published photographs

Foto
Photography ID: 452150
  Adult

Delta del Paraná
Buenos Aires
Argentina
05/13/2021
Carlos Alberto Miranda
Foto
Photography ID: 402113
  Adult

Delta del Paraná
Buenos Aires
Argentina
04/20/2019
Vicente Piccirillo
Foto
Photography ID: 282834
  Adult

Delta del Paraná
Buenos Aires
Argentina
08/19/2018
Vicente Piccirillo
Foto
Photography ID: 231512
♂ ♀
  Adult

Delta del Paraná
Buenos Aires
Argentina
10/18/2015
Sofia Tiscornia
Foto
Photography ID: 228035
  Adult

Delta del Paraná
Buenos Aires
Argentina
11/12/2017
Guillermo Garcia
Foto
Photography ID: 212998
  Adult

Delta del Paraná
Buenos Aires
Argentina
02/16/2016
Vicente Piccirillo
Foto
Photography ID: 196370
  Adult

Delta del Paraná
Buenos Aires
Argentina
03/24/2017
Gabriel Celedón
Foto
Photography ID: 169216
  Adult

Delta del Paraná
Buenos Aires
Argentina
09/25/2016
Gustavo Castaing
Foto
Photography ID: 156790
  Adult

Delta del Paraná
Buenos Aires
Argentina
07/09/2016
Mauricio Secchi
Foto
Photography ID: 122983
  Adult

Delta del Paraná
Buenos Aires
Argentina
09/20/2015
Diego Marino



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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
228386904/05/2025ArgentinaBuenos AiresHostería los Pecanes, Delta del Paraná1Diego Oscar
218492421/09/2024ArgentinaBuenos AiresÁrea Natural Protegida Monte Blanco (Ex Delta Terra), Delta del ParanáDiego Carus
213330111/08/2024ArgentinaBuenos AiresHostería los Pecanes, Delta del Paraná2Gabriel Carbajales
213329511/08/2024ArgentinaBuenos AiresRío Capitán, Delta del Paraná1Gabriel Carbajales
197723821/02/2024ArgentinaBuenos AiresHostería los Pecanes, Delta del Paraná4Gabriel Carbajales
177509104/06/2023ArgentinaBuenos AiresDelta del ParanáEsteban Argerich
176838220/05/2023ArgentinaBuenos AiresÁrea Natural Protegida Monte Blanco (Ex Delta Terra), Delta del ParanáDiego Carus
163579404/09/2022ArgentinaBuenos AiresCamping Cielo, Delta del Paraná8Sebastián Otero
163572203/09/2022ArgentinaBuenos AiresCamping Cielo, Delta del Paraná8Sebastián Otero
163478603/09/2022ArgentinaBuenos AiresCamping Cielo, Delta del ParanáMauricio Secchi
Page 1

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Bibliography related


Artículo Heredia, J., R. Moller Jensen, C. Figuerero y J. La Grotteria. 2010. Cuatro Furnariidae ‘pescando’: Hornero (Furnarius rufus), Curutié Colorado (Certhiaxis cinnamomea), Remolinera Castaña (Cinclodes atacamensis) y Remolinera Chocolate (Cinclodes olrogi). Nuestras Aves, 55: 17-19.



Citation recommended:

EcoRegistros. 2026. Rufous Hornero (Furnarius rufus) - Species sheet. Acceded from https://www.ecoregistros.org on 11/03/2026.