Current view: Data table and detailed info
Taxonomic note
Basileuterus tristriatus, B. melanotis, B. tacarcunae and B. punctipectus were previously lumped as B. tristriatus (del Hoyo and Collar 2016) but are split following genetic and vocal analyses that yield congruent results (Donegan 2014, GutiƩrrez-Pinto et al. 2012), although plumage divergence is weak, morphometric divergence absent and further work on voice of tacarcunae (known from a single recording) desirable to confirm this rearrangement. Taxon chitrensis is a junior synonym of melanotis (Dickinson and Christidis 2014). Monotypic.
Taxonomic source(s)
Handbook of the Birds of the World and BirdLife International. 2023. Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 8. Available at: https://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v8_Dec23.zip.
IUCN Red List criteria met and history
Red List criteria met
Red List history
Migratory status |
not a migrant |
Forest dependency |
high |
Land-mass type |
|
Average mass |
- |
Population justification: The population size has not been quantified, but the species is frequently observed across its range (see eBird 2023).
Trend justification: The population trend has not been investigated, but the only threat known to the species is the logging and fragmentation of forests within the range. Tree cover loss within the range is very low (2% over three generations; Global Forest Watch 2023, using Hansen et al. [2013] data and methods disclosed therein). Population declines are therefore likely equally low and localised; they are here tentatively placed in the band 1-9% over three generations.
Country/territory distribution
Important Bird and Biodiversity Areas (IBA)
Recommended citation
BirdLife International (2024) Species factsheet: Costa Rican Warbler Basileuterus melanotis. Downloaded from
https://datazone.birdlife.org/species/factsheet/costa-rican-warbler-basileuterus-melanotis on 26/12/2024.
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 26/12/2024.