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
Pectoral Sparrow
Arremon taciturnus
The pectoral sparrow is sexually dimorphic, and, as the name implies, sparrow-sized, at 15 cm (5.9 in) in length and 24 g (0.85 oz) in weight. Its upperparts are pale green, becoming yellow near the bend of the wing. The head is black, with white on its throat and as stripes on its crown. Its underparts are white in males and creamy in females, with males also having a broad black band going across its breast (a pectoral band). The beak is also black, roughly 14–15 mm (0.55–0.59 in) long for both males and females. Tails are 58–60 and 64–67 mm (2.3–2.4 and 2.5–2. Voice: The song of the pectoral sparrow is a high-pitched buzz, consisting of very short tzik notes (initial tzik note may be slightly faster, and lower in pitch.) and usually followed by 2-4 longer, almost identical tzzzzzz notes. The entire song lasts for 2–3 seconds, at a pitch of 8 kilohertz.
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 Pectoral Sparrow.