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

Streak-necked Flycatcher
Mionectes striaticollis
The streak-necked flycatcher is 13 to 13.5 cm (5.1 to 5.3 in) long and weighs 13 to 17 g (0.46 to 0.60 oz). The sexes have the same plumage. Adults of the nominate subspecies M. s. striaticollis have a dark gray face with white streaks and a small white spot behind the eye. Their crown and nape are slaty gray and the rest of their upperparts are dark olive. Their wings and tail are olive, sometimes with faint buffish olive wing bars. Their throat and upper breast are slate-gray with white streaks. Their lower breast and flanks are streaked with dark olive and yellow and their belly is yellow. Voice: The streak-necked flycatcher apparently sings almost solely at the lek. Its song is variously described as "a series of rhythmic, squeaky notes" and as "a melancholy, squeaky, rising-falling note" urrEEew".
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 Streak-necked Flycatcher.