Black-hooded Antshrike
Thamnophilus bridgesi
The black-hooded antshrike is 15 to 17 cm (5.9 to 6.7 in) long and weighs 26 to 27 g (0.92 to 0.95 oz). Members of genus Thamnophilus are largish members of the antbird family; all have stout bills with a hook like those of true shrikes. This species exhibits some sexual dimorphism. Adult males are mostly black. They have a white patch between their scapulars, small white dots on their wing coverts, and dark gray belly and undertail coverts. Adult females have blackish gray forehead, crown, and face with narrow white streaks. Voice: Garrigues and Dean describe the black-hooded antshrike's song as "an accelerating series of staccato notes that end in a longer, lower note". VanPerlo describes it as a "high wooden wekwekwekkerwikkerwek, varied in speed and length". Its call is "an extended, complaining note, usually repeated 2–3 times".
ID text from Wikipedia, CC BY-SA 4.0
Mouse-colored Antshrike
Thamnophilus murinus
The mouse-colored antshrike is 13 to 14 cm (5.1 to 5.5 in) long and weighs 17 to 20 g (0.60 to 0.71 oz). Members of genus Thamnophilus are largish members of the antbird family; all have stout bills with a hook like those of true shrikes. This species exhibits significant sexual dimorphism. Adult males of the nominate subspecies have gray upperparts with a hidden white patch between their scapulars. Their wings are dark yellowish brown that is somewhat rufous in the eastern part of its range; their wing coverts are grayer with buffy white tips. Voice: The mouse-colored antshrike's song is "slightly accelerating series of up to c. 15 similar notes". It has been written as "arr arr arr-arr wee'AWR". Its main call is "nasal and abrupt"; others are "a flat, raspy whine", "a clear note that becomes a raspy growl", "variable whines", and "abrupt notes".
ID text from Wikipedia, CC BY-SA 4.0

Learn this pair in the BeakBrain App
Photo and call practice. Coming soon to iPhone and Android.
Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Black-hooded Antshrike and Mouse-colored Antshrike.