Tufted Tit-Tyrant
Anairetes parulus
The tufted tit-tyrant is a small bird, averaging 9.5 to 11 centimeters (3.7 to 4.3 in) in length and weighing about 6 grams (0.21 oz). Its long, recurved crest is typically conspicuous and is often parted, giving the impression that the bird has two crests. The crest's feathers are black and emerge from the center of the bird's black crown, although occasionally there is a small patch of white hidden by the crest. The head is black overall with a white supraloral and postocular stripe. The bird's iris is creamy white to pale yellow and the bill is black.
ID text from Wikipedia, CC BY-SA 4.0
Yellow-billed Tit-Tyrant
Anairetes flavirostris
The yellow-billed tit-tyrant is 10 to 12 cm (3.9 to 4.7 in) long and weighs 6 to 7 g (0.21 to 0.25 oz). The sexes have the same plumage. Adults of the nominate subspecies A. f. flavirostris have a blackish split crest formed by elongated feathers on the sides of the crown. Their forecrown is dusky gray with faint white streaks, the rest of their crown is white, their supercilium is white, and the rest of their face is white with bold black streaks. Their upperparts are medium gray-brown with faint blackish streaks. Voice: The yellow-billed tit-tyrant's dawn song is "a rising trill with stuttered burst afterward: brreeee brr-br-br". Its calls are "a rising-falling, musical trill: brrreeeeuu a rising-falling musical chatter: tur-tur-TEE'TEE'tee-tee-tchip".
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: Tufted Tit-Tyrant and Yellow-billed Tit-Tyrant.