Thicket Antpitta
Myrmothera dives
The thicket antpitta is 13 to 16.5 cm (5.1 to 6.5 in) long; four individuals weighed between 38 and 44 g (1.3 and 1.6 oz). The sexes have the same plumage. Adults of the nominate subspecies have a buff loral patch and buff around their eye. Their crown, nape, and ear coverts are dull slate gray. Their upperparts are dull slate gray that becomes olive by the rump; their back has faint pale buffy streaks. Their uppertail coverts and tail are russet brown. Their wings are mostly dark olive-brown with paler rufescent brown outer webs on the primaries. Their throat is white or buffy white. Voice: The thicket antpitta's song "lasts around 1.6–2 seconds, and consists of a rapid ascending series of 10–13 clear whistles increasing in volume, accelerating slightly towards the end, and ending abruptly". Its alarm call is "an accelerating roll".
ID text from Wikipedia, CC BY-SA 4.0
Thrush-like Antpitta
Myrmothera campanisona
The thrush-like antpitta is about 14.5 to 15 cm (5.7 to 5.9 in) long and weighs between 39.5 and 64 g (1.4 and 2.3 oz). The sexes have the same plumage and the subspecies differ little from each other. Adults of the nominate subspecies M. c. campanisona have a small white spot behind their eye. Most of the rest of their face is rufous-brown with slightly paler and grayer lores. Their crown, nape, upperparts, and tail are rufous-brown. Their wings are mostly rufous-brown with dark brown inner webs and paler edges on the flight feathers. Their throat and underparts are white. Voice: The thrush-like antpitta typically sings from the ground or a low perch within dense vegetation. One description of its song, from Ecuador, is "a series of 4-6 hollow whistled notes, delivered quite quickly, 'whoh-whoh-whoh-whoh-whoh-whoh' " and may be repeated for long stretches.
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: Thicket Antpitta and Thrush-like Antpitta.