Bananaquit
Coereba flaveola
The bananaquit is a small bird, although size varies somewhat across the subspecies. Length can range from 10 to 13 cm (3.9 to 5.1 in). Weight ranges from 5.5 to 19 g (0.19 to 0.67 oz). Most subspecies of the bananaquit have dark grey (almost black) upperparts, black crowns and sides of the head, a prominent white eyestripe, grey throat, white vent, and yellow chest, belly, and rump. Coloration is heavily influenced by melanocortin 1 receptor variation. The sexes are alike, but juveniles are duller and often have partially yellow eyebrows and throat.
ID text from Wikipedia, CC BY-SA 4.0

Blue-grey Tanager
Thraupis episcopus
The blue-gray tanager is 16–18 cm (6.3–7.1 in) long and weighs 30–40 g (1.1–1.4 oz). Adults have a light bluish head and underparts, with darker blue upperparts and a shoulder patch colored a different shade of blue. The bill is short and quite thick. Sexes are similar, but the immature is much duller in plumage. The song is a squeaky twittering, interspersed with tseee and tsuup call 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: Bananaquit and Blue-grey Tanager.