Olive sparrow (Arremonops rufivirgatus)

The olive sparrow is a species of American sparrow in the family Passerellidae. Its range includes Belize, Costa Rica, Guatemala, Honduras, Mexico, Nicaragua and southern Texas .

It is 14–15.5 centimetres long, and 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. The sexes are similar, while the juvenile is more buff with some streaking on the belly. The olive sparrow.. more