Blue-and-black Tanager
Tangara vassorii
The blue-and-black tanager is an average-sized species for its genus, with a mean length of 13 cm (5.1 in) and mass of 18 g (0.63 oz). It shows slight sexual dimorphism, with females being slightly duller than males. Adult males are mainly cobalt blue with a black mask. The wing and tail feathers are black with blue edges. Subadults are mostly gray, but have black wings, tails, and lores. The bill is very short compared to other species of Tangara. The iris is brown, the bill is black, and the feet are wine gray. Voice: The blue-and-black tanager's calls include a thin, high-pitched tsit, a slightly lower swit, a repeated swit-swit-swit, and a hard SWIT-it. The song is 2–3 second long series of rhythmic, high-pitched notes that begin slow and then speed up into a zieeu-zie-zie-zizizizee trill, given every 15 seconds.
ID text from Wikipedia, CC BY-SA 4.0

Saffron-crowned Tanager
Tangara xanthocephala
The saffron-crowned tanager is an average-sized species of tanager, with a length of 12.5–13.5 cm (4.9–5.3 in) and a mass of 15–23.6 g (0.53–0.83 oz). Both sexes look similar. Adults have a blue-green body with blackish streaking on the back. The forecrown, lores, orbital area (region around the eyes), and chin are black, while the rest of the head is yellow, with an orange tinge to the crown. The wings and tail feathers are black, edged blue-green. The center of the belly and the undertail coverts are buff. The iris is dark brown, the bill is black, and the feet are gray. Voice: The saffron-crowned tanager's calls include a thin, high-pitched tsit and a high-pitched descending tsew. Its songs may be a series of squeaky, high-pitched notes.
ID text from Wikipedia, CC BY-SA 4.0
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Blue-and-black Tanager and Saffron-crowned Tanager.