LC
Thorn-tailed Rayadito Aphrastura spinicauda



Taxonomy

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. 2005 and updates. A classification of the bird species of South America. Available at: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.

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

Red List history
Year Category Criteria
2024 Least Concern
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 medium
Land-mass type Average mass -
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 1,510,000 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend decreasing - suspected -
Generation length 2.37 years - - -

Population justification: The global population size has not been quantified, but this species is described as 'common' (Stotz et al. 1996). This species is considered to have a medium dependency on forest habitat, and tree cover is estimated to have declined by 5.7% within its mapped range over the past 10 years (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). Therefore, as a precautionary measure, it is tentatively suspected that this loss of cover may have led to a decline of between 1-19% in the species' population size over the same time frame.

Trend justification:   .


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Argentina extant native yes
Chile extant native yes
Falkland Islands (Malvinas) extant uncertain yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Argentina Aluminé-Moquehue
Argentina Extensión Límite Este y Sur del Parque Nacional Nahuel Huapi
Argentina Lago La Plata - Fontana
Argentina Nahuel Huapi National Park and Reserve
Argentina Parque Nacional Lago Puelo - Parque Provincial Río Turbio
Argentina Parque Nacional Lanín
Argentina Parque Nacional Los Alerces y Laguna Terraplén
Argentina Parque Nacional Los Glaciares y adyacencias (Estancias El Sosiego, La Soledad y Anita)
Argentina Parque Nacional Perito Moreno y Reserva Provincial San Lorenzo
Argentina Parque Provincial Copahue-Caviahue
Argentina Reserva Provincial Lagunas de Epulaufquen
Chile Corredor Biológico Nevados de Chillán-Laguna del Laja
Chile Estero del Salto Valley
Chile Ibañez River Valley
Chile La Tapera
Chile Lago Colbún
Chile Lago Lanalhue
Chile Mancopulli
Chile Monumento Natural Contulmo
Chile Península Antonio Varas
Chile Putu
Chile Reserva Nacional Altos de Lircay
Chile Reserva Nacional Nonguén
Chile Salto Rayén

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Temperate major resident
Grassland Temperate suitable resident
Shrubland Subtropical/Tropical Dry suitable resident
Altitude 0 - 2200 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2024) Species factsheet: Thorn-tailed Rayadito Aphrastura spinicauda. Downloaded from https://datazone.birdlife.org/species/factsheet/thorn-tailed-rayadito-aphrastura-spinicauda on 23/11/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 23/11/2024.