Chestnut-sided Shrike-Vireo
Vireolanius melitophrys
A striking bird, adult chestnut-sided shrike-vireos have bright green backs and largely white undersides punctuated by their eponymous chestnut flanks that meet in a chest band. The head is characterized by a slate crown and nape, golden-yellow eyebrows that sometimes reach the lores at the bill base, black eyelines that are thin near the bill and thickest where they meet the gray nape, white cheeks, thin black malars, and a white throat. The legs are pink, and irides are yellow. Voice: The song is a complex, multi-pitched single-syllable whistle that quickly ascends in pitch with multiple harmonics before a longer, less harmonized descent, often given in repeated succession with pauses between whistles generally lasting between 0.7–1 seconds. Calls consist of a hoarse chatter, similar to many other species of Vireonid.
ID text from Wikipedia, CC BY-SA 4.0
Green Shrike-Vireo
Vireolanius pulchellus
The green shrike-vireo is 12 to 15 cm (4.7 to 5.9 in) long and weighs 22 to 30 g (0.78 to 1.1 oz). It is a bulky bird and a large member of its family. The sexes have the same plumage. They have a cerulean blue crown and nape with some green in the center of the crown. The sides of their head and their upperparts are bright green. Their chin and throat are yellow and the rest of their underparts mostly light yellowish green. The green is deeper on the flanks and the undertail coverts are greenish yellow. Voice: The green shrike-vireo's song has been described as "a repeated sweet peter-peter-peter or peer-peer-peer" and its call "a raspy djehr-djehr-djehr...". In Costa Rica it sings "peeta-peeta-peeta" on the Caribbean slope and "peer-peer-peer" on the Pacific slope.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
Learn this pair in the BeakBrain App
Photo and call practice. Coming soon to iPhone and Android.
Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Chestnut-sided Shrike-Vireo and Green Shrike-Vireo.