Short-billed Canastero
Asthenes baeri
The short-billed canastero is 14 to 15 cm (5.5 to 5.9 in) long and weighs 10 to 18 g (0.35 to 0.63 oz). It has a short and thick bill, and is more similar to the wholly unrelated little thornbird (Phacellodomus sibilatrix) than to other canasteros. The sexes have the same plumage. Adults of the nominate subspecies have an indistinct wide grayish supercilium on an otherwise dull grayish brown face. Their crown is dull gray-brown, their back a slightly grayer brown, and their rump and uppertail coverts gray with a brown tinge. Voice: The short-billed canastero's song is "a high-pitched, fast seep seep seepseepseep..., speeding up to and ending in a trill". Sometimes the introductory notes are omitted. It also gives a "series of short, buzzing 'pzzz' phrases.
ID text from Wikipedia, CC BY-SA 4.0
White-chinned Thistletail
Asthenes fuliginosa
The white-chinned thistletail is 18 to 20 cm (7.1 to 7.9 in) long and weighs 14 to 20 g (0.49 to 0.71 oz). It is the largest thistletail. The sexes have the same plumage. Adults of the nominate subspecies A. f. fuliginosa have a faint grayish-tawny supercilium and a whitish eyering on an otherwise blackish to dark brown face. Their crown, back, rump, and tail are dark reddish brown. Their wings are a brighter reddish brown. Their tail is long and deeply forked with few barbs at the feather ends that give a ragged appearance. Their chin is whitish. Voice: One of the white-chinned thistletail's songs is "a high-pitched, weak, slightly accelerating and ascending trill". Others are a "descending series of somewhat higher-pitched notes that accelerates into trill, and a slightly ascending series of tripled notes, 'tididit, tididit, tididit' ". Its calls include "a high-pitched, sharp, penetrating 'pyeek' or 'kick' " and "chink".
ID text from Wikipedia, CC BY-SA 4.0
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Short-billed Canastero and White-chinned Thistletail.