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
Brown-capped Tit-Spinetail
Leptasthenura fuliginiceps
The brown-capped tit-spinetail is 15 to 16 cm (5.9 to 6.3 in) long and weighs 9 to 13 g (0.32 to 0.46 oz). It is a small, slender, long-tailed furnariid with a short bill. The sexes have the same plumage. Adults of the nominate subspecies have a pale dull buff supercilium on an otherwise plain brownish face. Their crown is brown, their upper back a paler brown, and their lower back, rump, and uppertail coverts are refescent. Their wings are mostly rufous. Their tail is rufous; it is graduated and the feathers narrow at the tips giving a spiny appearance. Voice: The brown-capped tit-spinetail's song has not been described. Its call is "a faint insect-like 'pree' ".
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 Brown-capped Tit-Spinetail.