Black-crested Warbler
Myiothlypis nigrocristata
The black-crested warbler is about 13.5 cm (5.3 in) long and weighs about 11 to 20 g (0.39 to 0.71 oz). The sexes have the same plumage. Adults have a narrow black crown stripe, a wide yellow supercilium, a black stripe through the eye, a yellow crescent under the eye, and olive-green cheeks and ear coverts. Their nape, upperparts, wings, and tail are olive-green. Their throat and underparts are yellow. They have a dark iris, a blackish bill, and orange-yellow legs and feet. Juveniles have a dusky olive-gray head and upperparts and pale buffy-olive underparts. Their bill is paler than adults'. Voice: One description of the black-crested warbler's song is "a few sharp, sputtering notes accelerating gradually into fast, rattling that rises, tsuk, . tsuk, tsweettweet-tueet-ueet'eet'et 'et'et't't't" and is sometimes repeated many times with short pauses between. Its call is "a loud chit".
ID text from Wikipedia, CC BY-SA 4.0
Russet-crowned Warbler
Myiothlypis coronata
The russet-crowned warbler is approximately 14 cm in length. Among its distinguishing markings are the rust-orange crown, for which it is named, black crown-stripes and eye-line and otherwise gray face. Its breast is often pale yellow. The species exhibits no obvious sexual dimorphism. Voice: It has a musical song typically delivered in a rapid phrase of rising pitch. The response by the mate, often delivered immediately following or shortly after, is a similar song of descending pitch.
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: Black-crested Warbler and Russet-crowned Warbler.