I managed some terrible photos, but I do think they identify the bird as a Nelson's Sparrow, barely. These pictures, along with my personal observation of the dark gray median crown stripe and dark gray, unstreaked nape should eliminate Le Conte's Sparrow. The sharp delineation between the white belly and bright breast with blurry, non-distinct streaks should eliminate Saltmarsh Sparrow.
|These guys do not like to stay out in the open, or stay still for very long. Thank god for manual focus.|
|The bird is looking to the left, and part of the gray nape and gray median crown stripe are visible.|