Black-throated Green Warbler
Setophaga virens
It has an olive-green crown, a yellow face with olive markings, a thin pointed bill, white wing bars, an olive-green back and pale underparts with black streaks on the flanks. Adult males have a black throat and upper breast; females and immature males have a pale throat and black markings on their breast. Measurements: Length: 4.3–4.7 in (11–12 cm) Weight: 0.3–0.4 oz (8.5–11.3 g) Wingspan: 6.7–7.9 in (17–20 cm)
ID text from Wikipedia, CC BY-SA 4.0
Palm Warbler
Setophaga palmarum
Measurements: Length: 12–14 cm (4.7–5.5 in) Wingspan: 20–21 cm (7.9–8.3 in) Weight: 8.5–14.2 g (0.30–0.50 oz)
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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