Species
Vireo cassinii (Cassin’s vireo)
Vireo cassinii. Photo: (c) Bridget Spencer, some rights reserved (CC BY-NC)
Cassin’s vireo (Vireo cassinii) is a small North American songbird, ranging from southern British Columbia in Canada through the western coastal states of the United States. This bird migrates, spending the winter from southern Arizona (the Sonoran Desert) to southern Mexico.
Sightings
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