About Rhynchospiza strigiceps (Gould, 1839)
The Chaco sparrow, scientifically named Rhynchospiza strigiceps (Gould, 1839), is the smaller of the two former subspecies that were split to form separate species. Its upperparts are light brown marked with darker streaks, and feature varying amounts of rust and gray coloring. Underparts are pale gray, which blends into a buff color on the bird's flanks. Its head is gray, with a cinnamon crown and cinnamon postocular stripes, pale lores, and a black moustachial stripe. This species is a partial migrant, distributed in the Gran Chaco region that spans from south-central Paraguay into north-central Argentina. The Gran Chaco is a low elevation biome that reaches up to 1,000 m (3,300 ft), characterized by subtropical and tropical dry forests and shrubland.
