The Rufous-crowned Greenlet is a common endemic inhabitant of the Atlantic Forest biome, where it is found in tall forest, old second growth, and other well-wooded areas, to at least 1000 m. Seen well, it is a distinctive and agile little bird, with a clear rufous crown, olive-green upperparts, grizzled ear coverts, and yellowish-gray underparts. It is typically found in small flocks of conspecifics, and sometimes with other species, moving through the canopy or mid levels of the forest. Food mostly invertebrates; also some vegetable matter (small fruits), sometimes in large quantity.
