Olive Sparrow

The Olive Sparrow, scientifically known as Arremonops rufivirgatus, is a modestly plumaged bird with a distinctive olive back. This small sparrow measures between 14 to 15.5 centimeters in length. It boasts a brown-striped crown and a pronounced brown eye streak, complemented by a buff breast and some white feathers on the belly. Its beak is conical in shape. Both sexes exhibit similar coloration, while juveniles present a more buff appearance with streaking on the belly.

Identification Tips

When attempting to identify the Olive Sparrow, look for its unique olive back, which sets it apart from other sparrows. Its size is also a distinguishing feature, being smaller than similar species such as the Green-tailed Towhee, and lacking the Towhee's rusty cap. The Olive Sparrow's brown-striped crown and eye streak are also key identification markers.

Habitat

The Olive Sparrow is a resident bird found in thickets, chaparral, and undergrowth near forests. It thrives from sea level up to an elevation of 6,000 feet.

Distribution

This species is native to a range that includes Belize, Costa Rica, Guatemala, Honduras, Mexico, Nicaragua, and southern Texas, with sightings in counties such as Val Verde, Atascosa, and Nueces.

Behaviour

The Olive Sparrow is a non-migratory bird, establishing its presence year-round in its chosen habitats.

Song & Calls

The male Olive Sparrow's song consists of chip notes that may not be considered musical but are distinctive to the species, akin to the vocalizations of the Swamp Sparrow.

Breeding

Breeding season for the Olive Sparrow spans from March to September. The nest is constructed two to five feet above the ground and is quite large, incorporating materials such as straws, twigs, bark, leaves, and stems. Each breeding season, the Olive Sparrow lays two to five white, unspotted eggs.

Similar Species

The Olive Sparrow can be confused with the Green-tailed Towhee, but it is smaller in size and lacks the Towhee's rusty cap, making careful observation a necessity for accurate identification.

Conservation status

The Olive Sparrow is currently listed as Least Concern on the IUCN Red List, indicating that it does not face any immediate threat of extinction.