Ochre-bellied Flycatcher
Mionectes oleagineus
The ochre-bellied flycatcher is 12.5 to 14 cm (4.9 to 5.5 in) long and weighs 7.5 to 18.5 g (0.26 to 0.65 oz). The sexes have the same plumage. Adults of the nominate subspecies M. o. oleagineus have a greenish olive head, nape, back, and rump. Their wings are olive with wide buffy ochraceous edges on the tertials and thinner buffy ochraceous edges on the coverts that show as wing bars. Their tail is dark grayish brown or dusky olive. Their throat and underparts are rich cinnamon buff. The other subspecies differ slightly. M. o. Voice: The ochre-bellied flycatcher is mostly silent outside the breeding season. Its song has been described as "a series of sharp chip notes that is followed by a number of louder, more emphatic notes".
ID text from Wikipedia, CC BY-SA 4.0

Olive-striped Flycatcher
Mionectes olivaceus
The olive-streaked flycatcher is 13 cm (5.1 in) long. The sexes have the same plumage. Adults have a dark olive face with white streaks and a small triangular white spot behind the eye. Their crown and nape are dark olive and the rest of their upperparts are warm yellow green. Their wings and tail are dusky olive. Their throat and upper breast have dense dark olive and yellowish white streaking with thinner white streaks. Their lower breast and flanks are streaked with dark olive and yellow and their belly is unstreaked yellow. Voice: The olive-streaked flycatcher is mostly silent outside the breeding season. It usually sings the most at dawn, and usually low to the ground in dense vegetation. Its song is an "extremely high-pitched (c 8-10 kHz), prolonged series of extremely fast tinkling notes, descending and ascending in an undulating pattern over the length of the song". Its call is "a very high-pitched (c7.3-9.
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: Ochre-bellied Flycatcher and Olive-striped Flycatcher.