BrantaMedia.com

_{This YouTube video was produced by the American Bird Conservancy.}

The Western Warbling Vireo (Vireo swainsoni) is a quintessential species of spring and summer in the western half of North America. It was recently split from the Eastern Warbling Vireo; before 2025, the two were considered a single species: Warbling Vireo. Researchers determined that there were, in fact, two separate species, based on behavioral and genetic differences.

This rather drab bird is often hard to spot, hidden up among the leaves of tall deciduous trees, but its cheerful, energetic song is hard to miss. Males do most of the singing,

_{This YouTube video was produced by the American Bird Conservancy.}

The Eastern Warbling Vireo (Vireo gilvus) is a quintessential species of spring and summer in the eastern half of North America north of the southern United States. This rather drab bird is often hard to spot, hidden up high among the leaves of tall deciduous trees, but its buoyant, easygoing song — considered by many ornithologists and naturalists to be among the most beautiful in its range — is conspicuous. Males do most of the singing, but females sing as well, an unusual trait among temperate songbirds. Also unusual is