A side view of a Seaside Sparrow
A side view of a Nelson's Sparrow. Nelson's sparrow and the saltmarsh sparrow were considered to be a single species, the sharp-tailed sparrow; because of this it was briefly known as Nelson's sharp-tailed sparrow
Illustration of Passerculus sandwichensis (Savannah Sparrow)
Illustration of Spizella pusilla (Field Sparrow)