-Animals (Kingdom Animalia)

-Chordates (Phylum Chordata)

-Vertebrates (Subphylum Vertebrata)

-Birds (Class Aves)

-Perching Birds (Order Passeriformes)

-New World Sparrows (Family Passerellidae)

-Olive Sparrows and Allies (Genus Arremonops)

-Olive Sparrow (Arremonops rufivirgatus)

This is a sparrow of the dense thorn scrub, the Olive Sparrow hops on the ground, never straying far from cover. Feeds mainly on the ground, under dense thickets or near their edges. Often forages scratching with its feet among the leaf-litter. Its diet is mainly insects (including caterpillars) and the seeds of wild plants. It is the only sparrow with an olive back. It has a prominent brown eye streak and a brown-striped crown, with a buff breast, some white belly feathers, and a conical beak.