Maquis Canastero

The maquis canastero is 16 to 17 cm (6.3 to 6.7 in) long and weighs 13 to 14 g (0.46 to 0.49 oz). The sexes have the same plumage. Adults have a buff supercilium and eyering on an otherwise light brownish face. Their crown, back, and rump are rich brown and their uppertail coverts chestnut. Their wings are mostly rufous with dark fuscous tips on the flight feathers. Their tail's inner two pairs of feathers are longer than the others and dusky rufous; the rest are chestnut-rufous and progressively shorter. Voice: The maquis canastero's song is "a fast, accelerating series of squeaky notes". It also sings a longer "series of high, squeaky, strained notes, variable in length, accelerating and descending". Its apparent call is a "monotonic trill...'tuírrrr' ".