Sulphur-bellied Tyrannulet
Mecocerculus minor
The sulphur-bellied tyrannulet is 11 to 12 cm (4.3 to 4.7 in) long and weighs about 11 g (0.39 oz). The sexes have the same plumage. Adults have a medium gray crown. They have a thin white supercilium and a blackish stripe through the eye on an otherwise grayish white face. Their upperparts are dark olive. Their wings are dark dusky with wide buff edges on the flight feathers. Their wing coverts have wide buffy tips that show as two bars on the closed wing. Their tail is dusky olive with buffy-tinged edges on the feathers. Voice: The sulphur-breasted tyrannulet's calls include "a sharp and fast 'chew-chew-chew' " that sometimes continues with more notes and "a squeakier, more nasal 'skwi-skwe-skwu-skwu' ".
ID text from Wikipedia, CC BY-SA 4.0
White-bearded Flycatcher
Phelpsia inornata
The white-bearded flycatcher is 16.5 to 18 cm (6.5 to 7.1 in) long and weighs about 29 g (1.0 oz). The sexes have the same plumage. Adults have a brownish black crown and a white supercilium that extends far past the eye on an otherwise brownish black face. Their upperparts are olive-brown. Their wings are olive-brown with thin yellowish edges on the primaries. Their tail is olive-brown. Their throat is white and appears puffy. Their underparts are bright yellow. They have a dark iris, a stubby black bill, and blackish legs and feet. Voice: The white-bearded flycatcher's most common call is "a sharp, rising churup" that as an alarm is given as a series. Pairs give a duet of "a staccato, hammering CHEE'ter, CHEE'ter, CHEE'ter" that each member may give up to 12 times.
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: Sulphur-bellied Tyrannulet and White-bearded Flycatcher.