Dusky-headed Brushfinch

The dusky-headed brushfinch is 17 to 18 cm (6.7 to 7.1 in) long; two males weighed an average of 32.5 g (1.1 oz). The sexes have the same plumage. Adults have a mostly dusky olive head with a yellow "moustache" and a yellow throat. Their nape and upperparts are olive-dusky with a slightly brighter olive rump. Their tail and wings are a slightly darker olive-dusky with thin olive edges on the flight feathers. Their underparts are mostly yellow with an olive wash on the breast and flanks. They have a reddish to deep brown iris, a black bill, and dusky brown legs and feet. Voice: The dusky-headed brushfinch sings a "springy and bouncy" series of "swee-see chipi" notes. Pairs duet with a "multi-parted series...e.g. ti-ti-ti-ti-ti-ti, tch-tch-tch-tch-tch, chew chew chew". The species' call is "a high seep".