Black-throated Grey Warbler
Setophaga nigrescens
The black-throated gray warbler has mostly black, gray, and white plumage, which is soft, lacking gloss. With its striping and the small yellow spot between its eye and bill, it is a distinctive bird. The sexes differ slightly, both having gray upperparts with black streaks, and white underparts with black streaks on the flanks. The adult male is striped with black on the crown, throat, and below the eye, and has white around its chin and above its eye. The adult female has more dingy plumage on its head, with a white throat and dark gray cheeks.
ID text from Wikipedia, CC BY-SA 4.0
Prothonotary Warbler
Protonotaria citrea
The prothonotary warbler is 13 cm (5.1 in) long, weighs a mean 14.3 g (0.50 oz), and has a wingspan of 22 cm (8.75 in). It has an olive-coloured back with blue-grey wings and tail, yellow underparts, a relatively long pointed bill, and black legs. The adult male has a bright orange-yellow head. Females and immature birds are duller and have a yellow head. In flight from below, the short, wide tail has a distinctive two-toned pattern, white at the base and dark at the tip.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play BeakBrainPhotos and recordings are credited to their authors under the licence shown. Full profiles: Black-throated Grey Warbler and Prothonotary Warbler.