Rusty-fronted Canastero

The rusty-fronted canastero is 18 to 19 cm (7.1 to 7.5 in) long and weighs about 13 g (0.46 oz). The sexes have the same plumage. Adults have a grayish buff supercilium and arc below the eye, a small dark line in front of the eye, and a dark brownish patch behind the eye on an otherwise dull brownish face with pale streaks. Their forehead ("front") is rufous with faint pale streaks. Their crown, back, and rump are rich brown and their uppertail coverts chestnut-rufous. Their wings are mostly rufous-chestnut with dark fuscous tips on the flight feathers. Voice: The rusty-fronted canastero's song is "3 high-pitched ascending notes followed by a rapidly descending series, 'bsee-bzéé-bzee-di-di-di-di-d-d-d' ". Its call has been described as "high-pitched 'veer' and nasal 'djeeh' ".