White-banded Tyrannulet
Mecocerculus stictopterus
The white-banded tyrannulet is 12.5 to 13 cm (4.9 to 5.1 in) long and weighs 8 to 11 g (0.28 to 0.39 oz). The sexes have the same plumage. Adults of the nominate subspecies have a medium gray crown. They have a white supercilium, a blackish stripe through the eye, and a faint dusky crescent behind the ear coverts on an otherwise whitish face. Their upperparts are dark brownish olive. Their wings are dark dusky with bright yellow to ochraceous edges on the flight feathers. Their wing coverts have wide pure white tips that show as two bars on the closed wing. Their tail is dusky olive. Voice: What is thought to be the white-banded tyrannulet's song is "a rising, wheezy rhzeee?, sometimes followed by a rich chew-bit or a scratchy, thin, rising-falling chatter".
ID text from Wikipedia, CC BY-SA 4.0
White-throated Tyrannulet
Mecocerculus leucophrys
The white-throated tyrannulet is 11 to 14 cm (4.3 to 5.5 in) long. The sexes have the same plumage. Adults of the nominate subspecies M. l. leucophrys have a dark olive-gray crown and nape. They have white lores and a thin white supercilium on an otherwise dusky face with some white on the ear coverts. Their upperparts are medium olive-gray. Their wings are brownish black with cinnamon-buff to yellowish buff edges and tips on the flight feathers. Their wing coverts have cinnamon-buff tips that show as two wide bars on the closed wing. Their tail is dusky brown. Voice: The white-throated tyrannulet's dawn song is "an excited-sounding 'ch'd'dik, ch'd'dik, ch'd'dik, chéw' " with some variations in emphasis and sometimes some "kee-keek" notes inserted. While foraging it often gives a "pit" or "pif" note.
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: White-banded Tyrannulet and White-throated Tyrannulet.