Cassin's Vireo

What the Cassin's Vireo sounds like

Recorded by Christopher Eliot · Song · North Fork Blackfoot River, Powell County, Montana, United States · CC BY-SA 4.0 · via xeno-canto

Recorded by J. R. · Subsong · San Francisco Peninsula (near Redwood City), San Mateo County, California, United States · CC BY-SA 4.0 · via xeno-canto

ID tip

Text from Wikipedia, licensed CC BY-SA 4.0.

When to see the Cassin's Vireo

One bar for each month. Filled bars are the 6 months with records; pale bars are months with none. The wide bar is May, the month with the most records.

Where to see the Cassin's Vireo

The map shades 3 countries with regular records. Everything unshaded has no records. Countries are listed below the map.

About the Cassin's Vireo

Cassin's vireo is a small North American songbird, ranging from southern British Columbia in Canada through the western coastal states of the United States, including California, Oregon, and Washington. The Cassin's Vireo moves down Western United States forests in its migration. During its migration in early spring and late fall, it spends the winter in regions from southern Arizona to southern Mexico, including parts of Baja California and the Pacific coast of Mexico.

Text adapted from Wikipedia, licensed CC BY-SA 4.0.

Easily confused with

Plumbeous VireoVireo plumbeusThe plumbeous vireo is 12.4 to 13.8 cm (4.9 to 5.4 in) long and weighs about 12 to 20 g (0.42 to 0.71 oz). Philadelphia VireoVireo philadelphicusAdults are mainly olive-brown on the upperparts with yellow underparts; they have dark eyes and a grey crown. Bell's VireoVireo belliiMeasurements: Length: 4.5–4.9 in (11.5–12.5 cm) Weight: 0.3–0.3 oz (7.4–9.8 g) Wingspan: 6.7–7.5 in (17–19 cm)

Side by side: Cassin's Vireo vs Hutton's Vireo · Bell's Vireo vs Cassin's Vireo · Cassin's Vireo vs Philadelphia Vireo · Cassin's Vireo vs Plumbeous Vireo