Tiny hummingbird with a curved bill and a yellow lower bill. Males have a dark green iridescent back, a dark brown throat with a pale belly and vent, and dark undertail feathers. Females have an orange throat and breast with white edges to the tail, and their central tail feathers are longer than the males’. Inhabits the understory of humid forests and coastal forests (restinga), but also found in second growth and plantations. Males gather in leks emitting a barrage of high-pitched notes continuously.