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). The population trend is not known, but the population is not believed to be decreasing sufficiently rapidly to approach the thresholds under the population trend criterion (>30% decline over ten years or three generations). The population size is extremely large, and hence the species does not 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 is inferred to number 6.2 million mature individuals (Partners in Flight 2020).
Trend justification
The population trend is difficult to determine because of uncertainty over the impacts of habitat modification and cowbird parasitism on population sizes.
Text account compilers
Wheatley, H., Hermes, C.
Contributors
Butchart, S. & Ekstrom, J.
Recommended citation
BirdLife International (2024) Species factsheet: Black-whiskered Vireo Vireo altiloquus. Downloaded from
https://datazone.birdlife.org/species/factsheet/black-whiskered-vireo-vireo-altiloquus on 29/11/2024.
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 29/11/2024.