Kentucky Warbler
Geothlypis formosa
Adult Kentucky warblers are mostly an olive-green in color on their back and nape, and a brilliant yellow below from their throat to their belly. They have a small tinge of black on their crown, and a large black mask with a yellow pattern that runs from the beak and encircles the eyes, resembling a pair of spectacles. Female Kentucky warblers have slightly less black on the sides of their head, and immature birds may have almost no black at all. Measurements: Length: 5.1 in (13 cm) Weight: 0.5–0.5 oz (13–14 g) Wingspan: 7.9–8.7 in (20–22 cm)
ID text from Wikipedia, CC BY-SA 4.0
Worm-eating Warbler
Helmitheros vermivorum
The worm-eating warbler is a small New World warbler. It is around 13 cm (5.1 in) in length and weighs 11.8–17.4 g (0.42–0.61 oz). It is relatively plain with olive-brown upperparts and light-coloured underparts, but has black and light brown stripes on its head. It has a slim pointed bill and pink legs. In immature birds, the head stripes are brownish. The male's song is a short high-pitched trill. This bird's call is a chip or tseet. Worm-eating warblers are sexually monomorphic.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
Learn this pair in BeakBrain
Photo and call practice, free in any browser.
Play BeakBrainPhotos and recordings are credited to their authors under the licence shown. Full profiles: Kentucky Warbler and Worm-eating Warbler.