Short-billed Canastero Asthenes baeri


Taxonomic note

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.
SACC. 2006. A classification of the bird species of South America. Available at: #
SACC. 2006. A classification of the bird species of South America. Available at: #

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency Does not normally occur in forest
Land mass type Average mass 18 g

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 1,980,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals unknown not applicable not applicable 0
Population trend Decreasing suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -
Generation length (yrs) 3.8 - - -

Population justification: The global population size has not been quantified, but this species is described as 'fairly common' (Stotz et al. (1996).

Trend justification: This population is suspected to be in decline owing to ongoing habitat degradation (del Hoyo et al. 2003).

Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Argentina N Extant Yes
Bolivia N Extant Yes
Brazil N Extant Yes
Paraguay N Extant Yes
Uruguay N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Argentina Acambuco
Argentina Bañados del Quirquincho
Argentina Chaco de Tartagal
Argentina Reserva de Uso Múltiple Bañados del Río Dulce y Laguna Mar Chiquita
Argentina Parque Nacional Talampaya
Argentina Bosques de Olta
Argentina Bosques de Chacho
Argentina Reserva Provincial Laguna de Llancanelo
Argentina Reserva de Biosfera de Ñacuñan
Argentina Reserva Provincial Florística y Faunística Bosques Teltecas
Argentina Reserva Provincial Parque Luro
Argentina Victorica
Argentina Jagüel del Monte
Argentina Parque Nacional Lihue Calel
Argentina Parque Nacional Calilegua
Argentina El Fuerte y Santa Clara
Argentina Reserva Natural Las Lancitas
Argentina Valle Colorado y Valle Grande
Argentina Yuto y Vinalito
Argentina Sierras de Puesto Viejo
Argentina Chaguaral
Argentina Parque Nacional El Rey
Argentina Itiyuro-Tuyunti
Argentina Lomas de Olmedo
Argentina Lotes 32 y 33, Maíz Gordo
Argentina Palomitas y Ebro
Argentina La Porcelana
Argentina Quebrada de las Conchas
Argentina Río Seco
Argentina Sierras de Carahuasi
Argentina Salta Forestal
Argentina Sierra de Metán
Argentina Sierra Rosario de la Frontera
Argentina Luracatao y Valles Calchaquíes
Argentina Sierra de Medina
Argentina Ruinas de Quilmes
Argentina Trancas
Argentina Reserva Provincial Santa Ana
Argentina Salinas de Ambargasta
Argentina Bañado de Añatuya
Argentina Parque Nacional Copo
Argentina Bañados de Figueroa
Argentina Sierras de Guasayán
Argentina El Cachapé
Argentina Valle del río Paraguay-Paraná
Argentina La Fidelidad
Argentina Reserva Natural Loro Hablador
Argentina Estancia La Leonor
Argentina Estero Tapenagá
Argentina Parque Provincial Fuerte Esperanza
Argentina Parque Nacional Chaco
Argentina Parque Provincial Pampa del Indio
Argentina Río Bermejito
Argentina Reserva Natural Formosa
Argentina Valle Fluvial del Río Paraguay
Argentina El Cantor
Argentina Misión Taacaglé
Argentina Fortín Sargento Primero Leyes
Argentina Nacientes de los riachos Monte Lindo y Tatú Piré
Argentina Estancia Guaycolec
Argentina Bañado La Estrella Este
Argentina Bañado La Estrella Oeste
Argentina Pilagás III
Argentina Parque Nacional Río Pilcomayo
Argentina Riacho He He
Argentina Riacho Saladillo
Argentina Cuña boscosa de Santa Fe
Argentina Jaaukanigás
Argentina Bajos Submeridionales
Argentina San Javier
Argentina Sierras Australes de Buenos Aires
Argentina Caldenal del Sudoeste de Buenos Aires
Argentina Estepas arbustivas del Sur de Buenos Aires
Argentina Salinas Grandes
Argentina Sierras del Norte Cordobés
Argentina Sistema Uritorco
Argentina Chancaní y Sierras de Pocho
Argentina Lagunas Encadenadas del Oeste de la Provincia de Buenos Aires

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Savanna Moist suitable resident
Shrubland Subtropical/Tropical Dry major resident
Altitude 0 - 1300 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2021) Species factsheet: Asthenes baeri. Downloaded from on 25/10/2021. Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from on 25/10/2021.