Green-winged Saltator
Saltator similis
Slightly smaller than other species of the same genus, it has the same strong black beak that gave rise to the common name of these birds. As in the Saltator maximus , it has a green back, gray tail and sides of the head. The superciliary stripe is the longest of the three species (adult bird), with the "mustache" less defined and the throat all white. Underneath, gray dominates on the sides, becoming orange brown and white in the center of the belly. The wings are greenish. The juvenile does not have such a long stripe, being the same failed or nonexistent, right after leaving the nest.
ID text from Wikipedia, CC BY-SA 4.0
Olive-grey Saltator
Saltator olivascens
The olive-grey saltator has a thick, black bill that is slightly hooked at the end, with white supercilliaries (giving it a distinct white "eyebrow"), and a thin white crescent under its eye. Distinct black malar stripes frame either side of a white throat. Its underside is a light grey with some buffy coloration towards its flanks and undertail coverts. Voice: Described as having "a 'stuttering song' with rather harsh-sounding downslurred notes", they alternate high and low pitched notes to form a short but sweet melody that can be heard throughout the year. Both males and females sing, at times duetting in "a fast series of repeated rising whit notes, a series of overslurred low-pitched chup notes or loosely repeated high-pitched tseet notes.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Green-winged Saltator and Olive-grey Saltator.