Greater Scythebill

The greater scythebill is 24 to 30 cm (9.4 to 12 in) long and weighs 63 to 78 g (2.2 to 2.8 oz). It is the largest and heaviest scythebill with a shorter, stouter, and less curved bill than the others. The sexes have the same plumage. Adults have blackish brown ear coverts, a distinct whitish supercilium, and an even bolder whitish moustachial stripe. Their upperparts are dull rufous brown to chestnut with a darker crown. Their crown and nape have thin buff streaks that sometimes continue onto the upper back. Their rump, wings, and tail are dark rufous-chestnut. Voice: The greater scythebill's song is described as an "alternating series of twitters and nasal 'ik' notes" and by another author as "a rather weak and nasal, ascending 'ee-ee-ee-ee-ee-énh' ". It is very different from those of all other scythebills.