Giant Antshrike
Batara cinerea
The giant antshrike is the largest antbird, 27 to 35 cm (11 to 14 in) long and weighing 100 to 155 g (3.5 to 5.5 oz). The species exhibits significant sexual dimorphism, though both sexes have a crest, a very long and wide tail, and a long gray bill with a hook at the end like true shrikes. Adult males of the nominate subspecies have a black forehead, crown, and crest. Their back, wings, and tail are barred with black and white. Their face, nape, throat, and underparts are neutral gray. Adult females have a rufous crest with some black feather tips. Voice: The giant antshrike's song is a "series that starts with a short trill and continues with a fast series of notes that increase in strength and pitch, leveling out and decelerating at the end". Its calls include a "long, raspy, downward-inflected snarl, often repeated rapidly, and a short even series of abrupt loud notes".
ID text from Wikipedia, CC BY-SA 4.0
Silvered Antbird
Sclateria naevia
The silvered antbird is 14 to 16 cm (5.5 to 6.3 in) long and weighs 21 to 27 g (0.74 to 0.95 oz). Adult males of the nominate subspecies S. n. naevia have a dark gray crown, nape, and upperparts. Their wings and tail are blackish gray with white tips on the wing coverts. Their face is mostly dark gray with a paler gray supercilium. Their underparts are mostly white with gray scalloping that is lightest on the throat. Their flanks, crissum, and underwing coverts are gray. Voice: The silvered antbird's song is "a long rapid trill...of abrupt notes, introduced by more emphatic and higher notes than immediately following ones, latter building in intensity and rising in pitch, then dropping off steeply at end". It has been written as "jyíp, ji-ji-ji-ji-ji-jíjíjíjíjí-ji-ji-jrrr" and "tweep, twep, tip-tip-tip-tip-tí-tí-ti-ti-ti=TI-TI-TI-TI-TI-ti-ti-ti-ti-ti-i-i-i".
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: Giant Antshrike and Silvered Antbird.