Data Zone
Justification of Red List category
This species has an extremely large range, and hence does not 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). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to 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 given recent taxonomic splits. Prior to being split, the species has been described as 'uncommon' (Stotz et al. 1996).
Trend justification
The population trend has not been investigated. Tree cover within the range is lost at a rate of 4% over ten years (Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein). Population declines are therefore likely occurring at a similar rate; they are here tentatively placed in the band 1-9% over ten years.
The species is found in Costa Rica and western Panama (Chiriquí), in the Sierra Nevada de Santa Marta in Colombia and the Sierra de Perijá along the border to Venezuela, in the mountains of northern and eastern Venezuela, as well as in the eastern Andes from Colombia to southeastern Peru.
The species inhabits humid tropical and subtropical evergreen forest, sometimes venturing into forest adge and mature secondary growth. It is mostly found at altitudes between 475 and 1,850 m. It feeds on arthropods and small berries, typically foraging in the middle and upper strata (Fitzpatrick 2004).
Text account compilers
Hermes, C.
Contributors
Hardenbol, A., Temple, H. & Wheatley, H.
Recommended citation
BirdLife International (2024) Species factsheet: White-fronted Tyrannulet Phyllomyias zeledoni. Downloaded from
https://datazone.birdlife.org/species/factsheet/white-fronted-tyrannulet-phyllomyias-zeledoni on 22/12/2024.
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 22/12/2024.