Grey-browed Brushfinch
Arremon assimilis
The grey-browed brushfinch is 19 to 20 cm (7.5 to 7.9 in) long. The sexes have the same plumage. Adults of the nominate subspecies A. a. assimilis have a black crown with a gray stripe in the middle and a gray supercilium that extends to the nape and wraps down around the back of the ear coverts to the sides of the breast. The rest of their face is black. Their upperparts, wings, and tail are olive-green. Their throat is white that continues through the breast and belly. The sides of their breast and flanks are gray and their vent grayish olive. Juveniles are generally olive with dusky cheeks. Voice: The grey-browed brushfinch's song is "a high, sibilant series of thin whistles with short spaces between separate phrases (often of three elements), e.g. weseer-twee twesee? Sewtsee? Weseer-twee tweswee? Sewtswee?...". Its calls include "a high ti and a tseer".
ID text from Wikipedia, CC BY-SA 4.0
Orange-billed Sparrow
Arremon aurantiirostris
The orange-billed sparrow is 14.5 to 16.5 cm (5.7 to 6.5 in) long and weighs about 35 g (1.2 oz). The sexes have the same plumage and all subspecies have the eponymous bright orange bill. Adults of the nominate subspecies A. a. aurantiirostris have a black crown with a gray stripe along its middle and a wide white supercilium on an otherwise black face. Their upperparts are olive-green and their wings and tail a darker olive-green with yellow at the bend of the wing. Their chin has a small black area and their throat is white with a wide black band below it across the upper upper breast. Voice: The orange-billed sparrow's song varies geographically though in general is "high-pitched, either a series of alternating lilting notes or thin whistles". In northern Central America it is an "extremely high-pitched series of sharp whistles" that lasts about two seconds; its call there is a "smacking tsiit!".
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: Grey-browed Brushfinch and Orange-billed Sparrow.