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

Tawny-throated Leaftosser
Sclerurus mexicanus
The tawny-throated leaftosser is 15 to 17 cm (5.9 to 6.7 in) long and weighs 24 to 30 g (0.85 to 1.1 oz). The sexes are alike. Adults of the nominate subspecies have a dark reddish to chestnut brown head, upperparts, and tail, and chestnut rump and uppertail coverts. Their wings are darker brown than their back. Their throat and chest are tawny-rufous and the rest of their underparts similar to their back. Their fairly long and slightly decurved bill has a dark maxilla and a bicolored mandible. Their iris is brown and their legs and feet are dark brownish gray. Voice: The song of the tawny-throated leaftosser varies somewhat in pitch and number of notes between the subspecies, but is generally "a descending series of 3-9 fairly long high-pitched overslurred whistles Pseeer!-pseeer-pseer-pseer-pseer". It may start with "sharp spik! notes" and end with a "few stuttering short notes". Its principal call is a "short sharp explosive single note Tseek! or Skweek!".
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: Grey-throated Leaftosser and Tawny-throated Leaftosser.