Brown-backed Chat-Tyrant
Ochthoeca fumicolor
The brown-backed chat-tyrant is 14.5 to 16 cm (5.7 to 6.3 in) long and weighs 16 to 19 g (0.56 to 0.67 oz). The sexes have much the same plumage though females have somewhat paler and duller underparts than males. Adults of the nominate subspecies O. f. fumicolor have a warm brown crown and wide whitish supercilium that begins at the lores and becomes somewhat ochraceous past the eye. The rest of their face is grayish. Their upperparts are rufescent brown that becomes a rufous brown on the rump. Their wings are dusky or blackish with two prominent rufous wing bars. Voice: The brown-backed chat-tyrant usually sings from a perch but occasionally while hidden. Its song in Venezuela is described as "as a fast, rhythmic duet, plee, plít'ter'tew, plít'ter'téw..." and in Peru as "a weak, squeaky chatter, often in duet, of tsi'wit and tee notes". Its dawn song in Ecuador is "a fast chattered keé-ke-de keé-ke-de keé-kedu-keéekeé-ke-du-keé".
ID text from Wikipedia, CC BY-SA 4.0
Slaty-backed Chat-Tyrant
Ochthoeca cinnamomeiventris
The slaty-backed chat-tyrant is 12 to 13 cm (4.7 to 5.1 in) long and weighs 11 to 13 g (0.39 to 0.46 oz). The sexes have the same plumage. Adults have a dark slaty gray head with a white supercilium. Their upperparts and tail are dark slaty gray to blackish. Their wings are slightly browner than the back. Their breast and belly are deep dark chestnut or reddish brown, their flanks dark gray, and their vent and the middle of their lower belly are buffy white. They have a dark brown or blackish iris, a short, thin, black bill, and blackish to dark dusky gray legs and feet. Voice: The slaty-backed chat-tyrant's day song, or perhaps call, is "a high-pitched, sharp, and surprisingly loud dzweeéyeeuw, often tirelessly repeated". Its dawn song is the same vocalization "followed by 3-4 tseét notes". "Despite (or thanks to) its simplicity, perfectly audible above rushing torrents, where this species is usually found."
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: Brown-backed Chat-Tyrant and Slaty-backed Chat-Tyrant.