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CR
Medium Tree-finch Camarhynchus pauper

IUCN Red List Criteria

Critically Endangered B1ab(v) 
Endangered B1ab(v)+2ab(v);C2a(i,ii);D2 
Vulnerable B1ab(v)+2ab(v);C2a(ii) 

IUCN Red List history

Year Category
2013 Critically Endangered
2012 Critically Endangered
2010 Critically Endangered
2009 Critically Endangered
2008 Vulnerable
2004 Vulnerable
2000 Vulnerable
1994 Lower Risk/Near Threatened
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) 23 medium
Area of Occupancy breeding/resident (km2) 23 good
Number of locations 1 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 600-1700 good Estimated 2008
Population trend Decreasing medium -
Number of subpopulations 1 - - -
Largest subpopulation 1000-2499 - - -
Generation length (yrs) 3.8 - - -
Population justification: The maximum size of the population was estimated at 1,660 individuals in 2008. It is best placed in the band 1,000-2,499 individuals, equating to 667-1,666 mature individuals, rounded here to 600-1,700 mature individuals.
Trend justification: Numbers in 2008 were 39% of those recorded in 2004, indicating a decline outside the range expected for a fluctuating but stable population. Density fell from 154 birds/km2 in 2004 to 60 birds/km2 in 2008 at Cerro Pajas, and it is significantly less common now than it was 50 to 100 years ago (O'Connor et al. in prep.)

Country/Territory distribution

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

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Ecuador Isla Floreana site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Dry major resident
Forest Subtropical/Tropical Moist Montane major resident
Shrubland Subtropical/Tropical Moist major resident
Altitude 0 - 640 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops / Small-holder farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Ecosystem degradation, Ecosystem conversion
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, Species mortality
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 / Domestic Cow (Bos taurus) Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Domestic Dog (Canis familiaris) 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 / Domestic Pig (Sus domesticus) Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Ectoparasitic botfly (Philornis downsi) Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines Medium Impact: 7
Stresses
Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Unspecified species Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Ecosystem degradation

Recommended citation
BirdLife International (2014) Species factsheet: Camarhynchus pauper. Downloaded from http://www.birdlife.org on 23/09/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/09/2014.

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 Emberizidae (Buntings, American sparrows and allies)
Species name author Ridgway, 1890
Population size 600-1700 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 23 km2
Country endemic? Yes
Links to further information
- Summary information on this species