Amazonian Antshrike
Thamnophilus amazonicus
The Amazonian antshrike is 14 to 15 cm (5.5 to 5.9 in) long and weighs 17 to 21 g (0.60 to 0.74 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 T. a. amazonicus are black on the center of the forehead and crown; the rest of their head is gray. Their back is mostly black with a gray rump and a hidden white patch between the scapulars. Their wings, scapulars, and wing coverts are black with white spots and edges. Voice: The Amazonian antshrike's song is "a long...uncountable series that typically increases in speed and pitch initially, gradually levels off, then most often descends". The final notes are somewhat variable in quality and volume. One author writes it as "kur kur kur-kur-kur-kur-kur'ke'ke'ke'ke'kahkahkahkah".
ID text from Wikipedia, CC BY-SA 4.0
Lined Antshrike
Thamnophilus tenuepunctatus
The lined antshrike is 15 to 16 cm (5.9 to 6.3 in) long and weighs 22 to 23 g (0.78 to 0.81 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 marked sexual dimorphism though both sexes have a crest. Adult males of the nominate subspecies are almost entirely plumaged with narrow white and wider black bars. Their crown and crest are black and their throat is streaked black and white. Adult females have a rufous crown, crest, upperparts, wings, and tail. Voice: The lined antshrike's song is "an accelerating series of abrupt nasal notes that rises in pitch initially, falls towards end, and terminates in strong, downslurred raspy note". It has been written as "hah-ha-ha-hahahahahahahaha-hánh".
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: Amazonian Antshrike and Lined Antshrike.