LC
Perija Brushfinch Arremon perijanus



Taxonomy

Taxonomic note

Arremon torquatus, A. costaricensis, A. assimilis, A. basilicus, A. perijanus, A. atricapillus, A. phaeopleurus and A. phygas (del Hoyo and Collar 2016) were previously lumped as A. torquatus following AOU (1998 & supplements); SACC (2005 & updates).

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.

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

Red List history
Year Category Criteria
2023 Least Concern
2016 Vulnerable B1ab(i,ii,iii,v)
2012 Not Recognised
2008 Not Recognised
2004 Not Recognised
2000 Not Recognised
1994 Not Recognised
1988 Not Recognised
Species attributes

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

Estimate Data quality
Extent of Occurrence (breeding/resident) 7,100 km2 medium
Area of Occupancy (breeding/resident) 6,684 km2
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend stable - suspected -
Generation length 3.69 years - - -
Number of subpopulations 1 - - -
Percentage of mature individuals in largest subpopulation 100% - - -

Population justification: The global population size has not been quantified. The species appears to be rare; there are only few records despite some surveys (Lentino and Sharpe 2015, Jaramillo et al. 2020).

Trend justification: The population trend has not been quantified. The only threat known to the species is the logging and fragmentation of forests, as human footprint is increasing in parts of the range (Jaramillo et al. 2020, Ocampo-Peñuela et al. 2022). Current rate of tree cover loss within the range however remain overall very low (2-3% over three generations; Global Forest Watch 2023, using Hansen et al. [2013] data and methods disclosed therein). In view of the species' preference for forest edges (Jaramillo et al. 2020), this low rate of tree cover loss may not be affecting the population. Therefore, in the absence of evidence for any declines or substantial threats, the population is suspected to be stable.


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Colombia extant native yes
Venezuela extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Colombia Cerro Pintado (Serranía de Perijá)

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Moist Montane suitable resident
Altitude 700 - 2900 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 Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation
Agriculture & aquaculture Livestock farming & ranching - Small-holder grazing, ranching or farming Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation
Natural system modifications Fire & fire suppression - Increase in fire frequency/intensity Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation

Recommended citation
BirdLife International (2024) Species factsheet: Perija Brushfinch Arremon perijanus. Downloaded from https://datazone.birdlife.org/species/factsheet/perija-brushfinch-arremon-perijanus on 24/12/2024.
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 24/12/2024.