Araucaria Tit-Spinetail
Leptasthenura setaria
The Araucaria tit-spinetail is 17 to 19 cm (6.7 to 7.5 in) long and weighs about 11 g (0.39 oz). It is a small-bodied, long-tailed furnariid with a short crest and a longish (for the genus) slightly decurved bill. The sexes have the same plumage. Adults have a thin white supercilium on an otherwise black and white striped face. Their crown and crest are blackish with narrow paler streaks. Their upperparts are reddish brown with faint pale streaks on the upper back. Their wings are mostly rufous with wide rufous bases on the otherwise blackish flight feathers. Voice: The Araucaria tit-spinetail's song is a "series (2-3 sec) of very high, thin notes changing in tempo between trill and rattle".
ID text from Wikipedia, CC BY-SA 4.0
Plain-mantled Tit-Spinetail
Leptasthenura aegithaloides
The plain-mantled tit-spinetail is 15 to 17 cm (5.9 to 6.7 in) long and weighs 7.5 to 11 g (0.26 to 0.39 oz). It is a small, slender, long-tailed furnariid with a short bill. The sexes have the same plumage. Adults of the nominate subspecies L. a. aegithaloides have a white supercilium on an otherwise dark brownish, whitish streaked, face. Their crown is dark brown with wide golden-tawny streaks, their hindneck dark brown with grayish-white streaks, and their back, rump, and uppertail coverts dull brownish. Voice: The subspecies of the plain-mantled tit-spinetail have quite different voices. The nominate subspecies' song is "a high-pitched descending, broken trill lasting 2–5 seconds, with accentuated sharper notes, e.g. 'chikiti-chikiti-chikiti- chikiti-ti-ti-ti-pweew-ti-ti-ti-pweew-ti-ti-ti…' ". Its calls include a "shorter, lower-pitched nasal trill, 'prrr' " and "a double 'tzk-tzk' or 'pit-tzk-tzk' ".
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: Araucaria Tit-Spinetail and Plain-mantled Tit-Spinetail.