Learn what every symbol on the card means.Full credits and sources at beakbrain.com/symbols










What the Philadelphia Vireo sounds like

ID tip
Adults are mainly olive-brown on the upperparts with yellow underparts; they have dark eyes and a grey crown. They have no wing bars and no eye ring. There is a dark line through the eyes and a white stripe just over them. They have thick blue-grey legs and a stout bill. The Philadelphia vireo is similar in appearance to the warbling vireo, but can be reliably distinguished by having much yellower underparts, and dark lores.
Text from Wikipedia, licensed CC BY-SA 4.0.
When to see the Philadelphia 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 Philadelphia Vireo
The map shades 21 countries with regular records, and 5 more in a lighter tone where the bird turns up only as a stray. Everything unshaded has no records. Countries are listed below the map.
Recorded as a rare visitor in Portugal, Colombia, United Kingdom, Venezuela, Ecuador.
About the Philadelphia Vireo
The Philadelphia vireo is a small North American songbird in the vireo family (Vireonidae). "Vireo" is a Latin word referring to a green migratory bird, perhaps the female golden oriole, possibly the European greenfinch. The specific philadelphicus is for the city of Philadelphia.
Text adapted from Wikipedia, licensed CC BY-SA 4.0.
Easily confused with
Cassin's VireoVireo cassiniiThe vireo is 11–14 cm (4–6 inches) long.
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)
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).
Side by side: Hutton's Vireo vs Philadelphia Vireo · Bell's Vireo vs Philadelphia Vireo · Cassin's Vireo vs Philadelphia Vireo · Philadelphia Vireo vs Plumbeous Vireo
Learn the Philadelphia Vireo in the BeakBrain App
Photo and call practice. Coming soon to iPhone and Android.
Play today's Daily BirdEvery photo and recording on this page is credited to its author under the licence shown. Spotted a problem with this page, or have a better photo? Contribute.