It is a species of bird in the Tyrannidae family, endemic to Brazil. Measures an average of 8.8 centimeters and weighs an average of 6.8 grams. It is an insectivorous bird, feeding on small arthropods. Its natural habitats are subtropical or tropical moist lowland forests and heavily degraded former forest, including urban parks and gardens. Spends most of the time amongst foliage and is hard to be observed due to its diminutive size. Makes, however, a conspicuous round nest with straw and leaves, hanging from branches at a small height from the ground and with a side entrance. Lays from two to three eggs each nesting season, which are incubated solely by the female.