Moustached Wren
Pheugopedius genibarbis
The moustached wren is 15.5 cm (6.1 in) long and weighs 16.2 to 22.8 g (0.57 to 0.80 oz). The nominate adult has an olivaceous gray-brown crown and nape, bright chestnut back and rump, and a dull brown tail with narrow blackish bars. It has a white supercilium and eyering, a black stripe through the eye, gray-black cheeks streaked with white, a white moustachial stripe, and a black malar stripe. Its throat and upper chest are white, its lower chest buffy, and its flanks and belly deeper brown. Voice: Both sexes of moustached wren sing "a series of fast rollicking phrases" . Their call is "a whining 'jeeyr'" .
ID text from Wikipedia, CC BY-SA 4.0
Whiskered Wren
Pheugopedius mystacalis
The whiskered wren is 16 cm (6.3 in) long; a specimen from Venezuela weighed 29 g (1.0 oz). The nominate adult has a grayish-black crown, olivaceous gray nape, bright chestnut shoulders, back, and rump, and a reddish brown tail with dull black bars. It has a grayish white supercilium, a black line through the eye, blackish cheeks with a white line below and a black malar stripe below that. The chin and throat are off-white, the chest gray darkening to olivaceous gray on the belly, and the flanks reddish gray. Voice: Both sexes of whiskered wren sing in duet, "a splendid series of loud gurgling whistles" . The call is "a deep throaty 'bong bong'" .
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: Moustached Wren and Whiskered Wren.