Data Zone
Justification of Red List category
Although this species may have a small range, it is not believed to approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km² combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
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.
Arremon perijanus is endemic to the Sierra de Perijá of northern Colombia and western Venezuela.
The species is found in the understory of humid forest, preferring edge and border habitat (Jaramillo et al. 2020).
Forests below the species' range are under threat from a range of processes, including logging, burning and the expansion of the agricultural frontier (per Lentino and Sharpe 2015, Jaramillo et al. 2020, Global Forest Watch 2023). While much of the range is inaccessible and large tracts of undisturbed habitat remain, encroachment is slowly proceeding in lower parts of the range (Jaramillo et al. 2020, Global Forest Watch 2023).
Conservation Actions Underway
The species is listed as Vulnerable at the national level in Venezuela (Lentino and Sharpe 2015). It is found in the Sierra de Perijá National Park.
Conservation Actions Proposed
Accurately quantify the population size. Monitor the population trend. Monitor rates of habitat loss. Enforce effective management of the Sierra de Perijá National Park.
Text account compilers
Hermes, C.
Contributors
Botero-Delgadillo, E., Fjeldså, J., Sharpe, C.J., Temple, H. & Westrip, J.R.S.
Recommended citation
BirdLife International (2024) Species factsheet: Perija Brushfinch Arremon perijanus. Downloaded from
https://datazone.birdlife.org/species/factsheet/perija-brushfinch-arremon-perijanus 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.