Bearded Tachuri

The bearded tachuri is 8 to 10.5 cm (3.1 to 4.1 in) long and weighs 6 to 8 grams (0.21 to 0.28 oz). Adult males of the nominate subspecies have a dusky gray to blackish crown with a bushy but usually flattened crest; the crown's white center is mostly hidden. They have a short white supercilium and a thin blackish line through the eye on a face that is otherwise thinly striped with black and white. Their upperparts are mostly buffy brown with a tawny to rufous rump. Voice: The bearded tachuri sings both from a perch and during its flight display, a "very high, thin series of about 3 'see sisi' notes, ending in an odd, low, toneless, very short 'krrak', together as 'see sisi-krrak' ". It also makes "weak rising 'feee' or 'pewee' " contact calls.