Sooty-capped Chlorospingus

The sooty-capped chlorospingus is 13 to 14 cm (5.1 to 5.5 in) long and weighs about 16 to 24 g (0.56 to 0.85 oz). The sexes have the same plumage. Adults have a mostly sooty black head with a bold jagged white stripe from above the eye back and down the neck; its shape has been likened to a lightning bolt. Their upperparts and tail are olive. Their flight feathers are dusky with olive-yellow edges. Their throat is whitish with many, though inconspicuous, black specks. Voice: The sooty-capped chlorospingus sings "a thin squeaky twittering". The song has been written as "see-chur see-chur see-chur see see see-chur" and "sit-sit swíee-d-d-d-d-d-d sit-a-wit". Its calls include "high, thin, lisping tsit notes followed by t-z-z-z-z-z-zit, chat-t-t-t-, zwee-zwee-zwee... and so on".