adult; no sexual dimorphism (California, USA; 2006-04-22)
Brewer's Sparrow Spizella breweri
Native Range: North America
Notes:
a very small, nondescript sparrow of deserts regions and open scrubland; typically in flocks feeding on or near the ground; closely related to other Spizella sparrows including Chipping Sparrow and Clay-colored Sparrow; some individuals are nearly imposible to distinguish with certainty.