Current view: Data table and detailed info
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
Red List history
Migratory status |
full migrant |
Forest dependency |
high |
Land-mass type |
|
Average mass |
15 g |
Population justification: The global population is estimated to number 5 million mature individuals (Partners in Flight 2019).
Trend justification: The species has been increasing at an average rate of 1.1% per year between 1970 and 2017 (Partners in Flight 2019). Short-term trends however suggest that the population has been roughly stable over the past ten years (Pardieck et al. 2018).
Country/territory distribution
Important Bird and Biodiversity Areas (IBA)
Recommended citation
BirdLife International (2024) Species factsheet: Cassin's Vireo Vireo cassinii. Downloaded from
https://datazone.birdlife.org/species/factsheet/cassins-vireo-vireo-cassinii on 23/12/2024.
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 23/12/2024.