Line-cheeked Spinetail
Cranioleuca antisiensis
The line-cheeked spinetail is a mid-sized spinetail, weighing 15–18 g and reaching 14.5 cm long. Like other spinetails in the genus Cranioleuca, it has a long graduated tail and a relatively long bill that curves downward slightly. It has a rufous crown; with a well-defined white supercilium; a pale throat; and some streaking on its ear coverts. It is brown to olive-grey above; with a greyish brown breast and belly; and rufous tail and wings. The line-cheeked spinetail is a diurnal species and vocalizes most actively at dawn and dusk to maintain their breeding territory boundaries.
ID text from Wikipedia, CC BY-SA 4.0
White-browed Spinetail
Hellmayrea gularis
The white-browed spinetail is 11 to 13.5 cm (4.3 to 5.3 in) long and weighs 11 to 15 g (0.39 to 0.53 oz). It has a short tail compared to other spinetails. The sexes have the same plumage. Adults of the nominate subspecies H. g. gularis have whitish supercilia that almost meet on the forehead on an otherwise dark rufescent brown face. Their forehead, crown, and nape are rufescent brown with faint paler streaks. Their upperparts and wings are also rufescent brown. Their tail is rufescent brown; the ends of the feathers are pointed and lack barbs. Voice: The white-browed spinetail's song is "a series of high-pitched notes ending in trill, 'chit-chit-chit-chit-chi-chi-chichichichichichi' or 'cheet teet-teet-ti-tititit' ". Its calls include an "abrupt 'chip' " and a "nasal descending trill" and also "repeated single 'chiyt' or 'tseet' notes".
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: Line-cheeked Spinetail and White-browed Spinetail.