Vesper Sparrow (Pooecetes gramineus) August 7, 2020 1357 × 905 Vesper Sparrow (Pooecetes gramineus) Vesper Sparrow (Pooecetes gramineus), Oct 2011, Napeague. Migrant. Late October, 2011. Napeague, New York. Grasslands. Migrant.