Bolivian Recurvebill

The Bolivian recurvebill is 19 to 20 cm (7.5 to 7.9 in) long and weighs 37.5 to 48.5 g (1.3 to 1.7 oz). It is a largish furnariid with a heavy, wedge-shaped, somewhat upturned, bill. The sexes have the same plumage. Adults have a buff supercilium on a mostly grizzled brownish and rufous face. Their crown and back are dark rich reddish brown with dark buff streaks. Their rump is slightly paler than the back and minimally streaked, and their uppertail coverts are dark chestnut. Their wings are dark rich reddish brown with ochraceous at the bend. Their tail is dull chestnut. Voice: The Bolivian recurvebill's song is "a harsh, staccato, rattling, ascending series that levels in pitch and then ends abruptly". Its calls are "a raspy 'chet' and nasal, scolding 'naah' ".