Spot-backed Antshrike
Hypoedaleus guttatus
The spot-backed antshrike is a large antbird, 20 to 21 cm (7.9 to 8.3 in) long. The species exhibits slight sexual dimorphism. Both sexes have a short, heavy, gray bill with a hook at the end like true shrikes. Adult males have a black crown, nape, and upperparts spotted with white and a brownish black tail with white bars. Their throat and breast are white and their sides pale gray. Their belly and crissum are nearly white in the northern part of their range and gradually darken to brownish yellow to the south. Voice: The spot-backed antshrike's song is a "very high, slow, at first rising then descending, shivering rattle" that lasts four or five seconds. Its calls include a "long, downward-inflected whistle", a "shorter, slightly descending churr", and an "abrupt 'chip' ".
ID text from Wikipedia, CC BY-SA 4.0
White-bellied Antbird
Myrmeciza longipes
The white-bellied antbird is about 15 cm (5.9 in) long and weighs an average of about 28 g (0.99 oz). Adult males of the nominate subspecies M. l. longipes have a cinnamon rufous crown, upperparts, wings, and tail. They have a hidden white patch between their scapulars. Their lesser wing coverts have white or pale buff edges and sometimes cinnamon tips. The sides of their head, their throat, and their upper breast are black and bordered with slate gray. Their lower breast and belly are white, their flanks tawny or buffy, and their undertail coverts tawny. Voice: The male white-bellied antbird's song is "a bright, ringing crescendo of 15-25 loud, rapid jeer notes...descending, trailing off, and ending in a few chew notes on same pitch". Females sing a similar though shorter song. The species' calls include "a short, liquid rattle" and a "long...thin, downslurred whistle, sometimes abbreviated".
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: Spot-backed Antshrike and White-bellied Antbird.