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Masafuera Rayadito Aphrastura masafuerae

IUCN Red List Criteria

Critically Endangered B1ab(iii) 
Endangered B1ab(iii);D 
Vulnerable B1ab(iii);D1+2 

IUCN Red List history

Year Category
2012 Critically Endangered
2010 Critically Endangered
2009 Critically Endangered
2008 Critically Endangered
2005 Critically Endangered
2004 Vulnerable
2000 Vulnerable
1996 Vulnerable
1994 Vulnerable
1988 Threatened

Species attributes

Migratory status not a migrant Forest dependency Medium
Land mass type   Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 11 medium
Number of locations 1 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 50-249 medium Estimated 2011
Population trend Stable medium -
Number of subpopulations 1 - - -
Largest subpopulation - - -
Generation length (yrs) 3.8 - - -
Population justification: The current population size is uncertain, with some survey techniques yielding estimates of c.140 individuals (I. Hahn in litt. 2012), with others giving estimates closer to 500 individuals. It is precautionarily placed in the band 50-249 mature individuals, which equates to 75-374 individuals in total, rounded here to 70-400 individuals.
Trend justification: The species seems to have shown a rapid decline between the mid-1980s and early 2000s, but seems to have stabilised at around 140 individuals since then (I. Hahn in litt. 2012).

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Chile Native Extant Yes      

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Chile Isla Alejandro Selkirk (Parque Nacional Archipiélago de Juan Fernández, Isla Alejandro Selkirk IBA) site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Temperate major resident
Shrubland Subtropical/Tropical Moist major resident
Wetlands (inland) Permanent Rivers/Streams/Creeks (includes waterfalls) suitable resident
Altitude 600 - 1320 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Future Whole (>90%) Unknown Unknown
Stresses
Indirect ecosystem effects, Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Black Rat (Rattus rattus) Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Reduced reproductive success
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Brown Rat (Rattus norvegicus) Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Reduced reproductive success
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Domestic Cat (Felis catus) Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Goat (Capra hircus) Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / House Mouse (Mus musculus) Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Reduced reproductive success
Invasive and other problematic species, genes & diseases Problematic native species/diseases Timing Scope Severity Impact
Ongoing Majority (50-90%) Negligible declines Low Impact: 5
Stresses
Species mortality

Recommended citation
BirdLife International (2014) Species factsheet: Aphrastura masafuerae. Downloaded from http://www.birdlife.org on 21/09/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 21/09/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Critically Endangered
Family Furnariidae (Ovenbirds)
Species name author (Philippi & Landbeck, 1866)
Population size 50-249 mature individuals
Population trend Stable
Distribution size (breeding/resident) 11 km2
Country endemic? Yes
Links to further information
- Summary information on this species