Rufous-breasted Antthrush
Formicarius rufipectus
The rufous-breasted antthrush is 18 to 19 cm (7.1 to 7.5 in) long. Males weigh 70 to 78 g (2.5 to 2.8 oz) and females 65 to 82 g (2.3 to 2.9 oz). The sexes have the same plumage. Adults of the nominate subspecies F. r. rufipectus have a dark chestnut crown, nape, and sides of their neck. Their face and throat are blackish with a bluish white ring of bare skin around their eye. Their back and wings are dark brown, their rump and uppertail coverts dark rufescent brown, and their tail blackish. Their flight feathers have dusky inner edges and a wide cinnamon band at the base. Voice: The rufous-breasted antthrush's song varies somewhat among the subspecies. It is "two clear whistles at 1·8–2 kHz, 'toot-toot', second note sometimes slightly higher-pitched in rufipectus, usually so in carrikeri. The species' call is "a double-noted chirp" written by one author as "TU'TCHOOP".
ID text from Wikipedia, CC BY-SA 4.0
Rufous-capped Antthrush
Formicarius colma
The Formicarius colma is generally a small bird, averaging around 18 cm with males weighing between 38 and 49 grams and females between 41 and 49 grams. Males are marked by a black forehead, rufous-colored (red-brown) crown and nape, with the crown including a variable amount of black feathers. Its back, rump, and wings are olive-brown color with a dusky brown tail and black on the neck, throat, and sides of the head. The upper breast is a dark black that merges into a dark gray on the lower breast while the belly and flanks are a paler gray with (occasionally) a brown wash.
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: Rufous-breasted Antthrush and Rufous-capped Antthrush.