White-naped Brushfinch
Atlapetes albinucha
The white-naped brushfinch is 17 to 21 cm (6.7 to 8.3 in) long and weighs 31 to 37 g (1.1 to 1.3 oz). The sexes have the same plumage. Adults of the nominate subspecies have a mostly black head with a wide white stripe in the middle of the crown that continues onto the nape. Their upperparts, wings, and tail are dark slaty gray with a slight olive tinge. Their throat and underparts are yellow with a dusky yellowish gray wash on the flanks. Juveniles have a medium sooty brown head and dark sooty brown upperparts, dark streaks on the breast, and a brownish cinnamon wash on the flanks. Voice: The white-naped brushfinch's song is "a series of high-pitched notes and trills: tseee'up-tseee'ew-ti'ti'ti'ti'ti'ti'ti....
ID text from Wikipedia, CC BY-SA 4.0
Yellow-thighed Brushfinch
Atlapetes tibialis
The yellow-thighed brushfinch is about 18 cm (7.1 in) long and weighs 27 to 35 g (0.95 to 1.2 oz). The sexes have the same plumage. Adults have puffy lemon yellow feathers on their tibiae that give the species its English name. They have a black crown. The rest of their head and their upperparts are sooty slate and their wings and tail are almost black. Their chin and throat are blackish and their underparts are dull slate. They have a dark rusty brown iris, a black bill, and black to gray legs and feet. Voice: One author described the yellow-thighed brushfinch's primary song as "high, spritely, and somewhat squeaky". Others have called it "bubbly", "metallic", "tinkling", "flowing", "squissing" and "spinking". It is sung by both sexes year-round.
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: White-naped Brushfinch and Yellow-thighed Brushfinch.