Fiery-capped Manakin
Machaeropterus pyrocephalus
The fiery-capped manakin is 8 to 9 cm (3.1 to 3.5 in) long and weighs about 10 g (0.35 oz). The species is sexually dimorphic. Adult males of the nominate subspecies have the golden crown and nape with a red stripe in the middle that give the species its English name and specific epithet. The rest of their face is olive. Their upperparts are rosy rufous to maroon. Their tail and most of their wing are olive. Their wings have some white on the inner secondaries and some black spots on the tertials. Their throat is whitish and the rest of their underparts are streaked with dull pink and whitish.
ID text from Wikipedia, CC BY-SA 4.0
Striolated Manakin
Machaeropterus striolatus
The striolated manakin is 9 to 10.3 cm (3.5 to 4.1 in) long and weighs 6.4 to 12.5 g (0.23 to 0.44 oz). The species is sexually dimorphic. Adult males of the nominate subspecies M. s. striolatus have a bright red forehead, crown, and nape. Their face, upperparts, and tail are bright olive-green. Their wings are mostly a grayer olive-green than the upperparts and have white tips on the tertials and white inner webs on the other flight feathers. Their chin and throat are buff or whitish. The rest of their underparts are whitish with bold red stripes on the breast, belly, and flanks. Voice: The male striolated manakin's "advertising call" varies among the subspecies but is "always somewhat insect-like". In Ecuador its song is described as a repeated "soft, clear, whistled who-cheéuw". In Peru it is described as "a high, sneezy cli-CHEW!".
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: Fiery-capped Manakin and Striolated Manakin.