Plumbeous Vireo
Vireo plumbeus
The 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). The sexes have the same plumage. Adults of the nominate subspecies V. p. plumbeus have a neutral gray crown and nape, a wide white stripe above the lores, a wide white eye-ring, a dusky stripe through the eye-ring, and neutral gray ear coverts. Their upperparts are neutral gray with an olive-green tinge on the rump. Their wing coverts are blackish gray with whitish tips that show as two wing bars. Their remiges are blackish gray with pale olive gray edges. Voice: The male plumbeous vireo's primary song is a "jerky series of burry phrases, separated by pauses often alternates between ascending and descending phrases: ch'reeh ch'roo ch'reeh ch'roo or ch'ree chi-ri'eet ch'ree ch'ree-oo". Another song is a "complicated jumble of chattering, warbling, and singing in rapid and apparently random combinations". The species' calls include an "rasping chatter...
ID text from Wikipedia, CC BY-SA 4.0
Yellow-green Vireo
Vireo flavoviridis
The adult yellow-green vireo is 14–14.7 cm in length and weighs 18.5 g. It has olive-green upperparts and a dusky-edged gray crown. There is a dark line from the bill to the red-brown eyes, and a white supercilium. The underparts are white with yellow breast sides and flanks. Young birds are duller with brown eyes, a brown tint to the back, and less yellow on the underparts. The adult yellow-green vireo differs from the red-eyed vireo in its much yellower underparts, lack of a black border to the duller gray crown, yellower upperparts and different eye color.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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