Thick-billed Vireo vs Yellow-winged Vireo

Thick-billed Vireo

Vireo crassirostris

Tiny13 gWoodland

The thick-billed vireo is 11.5 to 13.4 cm (4.5 to 5.3 in) long and weighs about 11 to 16 g (0.39 to 0.56 oz). The sexes have the same plumage. Adults of the nominate subspecies V. c. crassirostris have a mostly grayish olive to brownish olive crown, face, and nape with blackish lores, a pale yellow stripe above the lores, and a pale to darker yellow eye-ring that sometimes is incomplete. Their upperparts are grayish olive to brownish olive with a more olive-green rump and uppertail coverts. Their wing coverts are dusky grayish brown with wide white tips that form two prominent wing bars. Voice: The thick-billed vireo's song is a "ubbly, variable chik-didle-wer-chip". Only males sing.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Grete Pasch · CC BY 4.0

Yellow-winged Vireo

Vireo carmioli

Tiny13 gForest

The yellow-winged vireo is 11 to 11.5 cm (4.3 to 4.5 in) long and weighs about 13 to 15 g (0.46 to 0.53 oz). The sexes have the same plumage. Adults have a gray-green crown. A whitish to buffy yellow area above the lores and eye-ring give the appearance of spectacles. Their nape and upperparts are dull greenish. Their wing coverts are dark greenish gray with wide whitish to pale yellow tips that show as two wing bars. Their primaries and secondaries are blackish gray with wide yellow-green edges. Their rectrices are blackish gray with wide greenish yellow edges on the outer webs. Voice: The yellow-winged vireo's song is "a leisurely series of two- and three-note phrases with distinct pauses between phrases". It has been written as "cheeyah, cheeyah, chipcheewee, interspersed with longer pauses". Its calls include a "nasal net" and a "chwick".

ID text from Wikipedia, CC BY-SA 4.0

Photo: Anthony Batista · CC BY 4.0

Photos and recordings are credited to their authors under the licence shown. Full profiles: Thick-billed Vireo and Yellow-winged Vireo.