Grey-throated Leaftosser
Sclerurus albigularis
The grey-throated leaftosser is one of the larger members of genus Sclerurus. It is 16 to 18 cm (6.3 to 7.1 in) long and weighs 34 to 46 g (1.2 to 1.6 oz). The sexes are alike. The nominate subspecies has a grayish brown face with a somewhat scaly appearance. Its crown and back are rich chestnut-brown and its rump and uppertail coverts are a brighter reddish chestnut. Its flight feathers are rich brown and its tail is dark gray-brown. Voice: The grey-throated leaftosser's song is "a series of 4–6 tripled rising notes, 'kwu-kwu-kwe-kwe-kwi-kwi' " that sometimes has "musical trills" within it and at the end. Another description of it is "squeaky, plaintive, ascending, whistled notes, 'tuéé, tuéé, tuéé, tweééptu'." Its alarm call is "a squeaky, sharp 'cheek' or 'chik-chik'."
ID text from Wikipedia, CC BY-SA 4.0

Scaly-throated Leaftosser
Sclerurus guatemalensis
The scaly-throated leaftosser is 16.5 to 18 cm (6.5 to 7.1 in) long and weighs about 35 g (1.2 oz). The sexes are alike. Adults of the nominate subspecies have a dark brown crown and nape with a scalloped appearance. Their back is dark brown, their rump and uppertail coverts reddish brown, and their tail is a darker brown than their back. Their flight feathers are dusky. Their face is shades of brown. Their chin and throat feathers are whitish with darker margins that give a scaly appearance. Voice: The scaly-throated leaftosser's song has been described as "a beautiful, clear trill", as "a descending series of accented whistles", and as "a slightly laughing, rippling series of 7-12 or more sharp, slightly liquid week or swee notes". Its call has been described as "a piercing wheek", "a sharp, sometimes metallic pick or zick", and "a sharp, explosive squeak! or sweeik".
ID text from Wikipedia, CC BY-SA 4.0

Where you might meet both
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: Grey-throated Leaftosser and Scaly-throated Leaftosser.