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Passeriformes / Vireonidae / Vireo

Cassin's Vireo

Vireo cassinii

IUCN: Least Concern

Data Sources

AviList 2025 eBird (casvir) Avibase

Taxonomy data from AviList 2025.

Taxonomy

Order: Passeriformes
Family: Vireonidae
Genus: Vireo

Subspecies (2)

Vireo cassinii cassinii

breeds southern British Columbia to northern Baja California; winters to eastern Oaxaca (southeastern Mexico)
Vireo cassinii lucasanus

mountains of southern Baja California (Sierra de la Laguna)

Data Sources

AviList 2025 eBird (casvir) Avibase

Taxonomy data from AviList 2025.