This Savannah Sparrow Passerculus sandwichensis was one of c. 15 seen feeding at the Newport Beach Golf Course on Mustang Island, Nueces county, Texas on October 16, 2011. Its contrastingly buffy head really caught the eye, suggesting Baird's Sparrow. In particular, note the buffy streaked hindneck - supposedly a major ID feature for Baird's Sparrow:
