Tiny bird of forest undergrowth, named for exceptionally broad bill (difficult to see). Very small and short-tailed. Brownish-olive above and pale yellowish below, with black pattern on cheek. Throat and breast uniformly buffy, without contrasting white throat. Crown dull rufous with hidden golden center. Sexes alike. Gives a very high insectlike trill. Usually seen singly or in pairs, always in the lower levels of the forest. Inconspicuous.