A small, slow-moving species that prefers dry brush and scrublands where it typically feeds low and sometimes even on the ground; sometimes found at higher elevations where it can be found feeding in or near the canopy in vine tangles. The Flat-billed Vireo is a relatively plain species, with bold white wingbars, and whitish eyes. The Greater Antillean Elaenia has a smaller more pointed bill, darker eyes, and is usually found perched upright or flycatching. Flat-billed Vireos sing a “we-we-we-we-we…,” typically in a series of six to ten notes given at a rate of about seven per second, but sometimes given more rapidly at about twelve notes per second. Calls include a staccato ratcheting given by agitated birds.