This juvenile Clay-colored Sparrow Spizella pallida was with a flock of .c 20 typical-looking birds at Packery Channel on Mustang Island, Nueces county, Texas on October 16, 2011. Note the streaked gray hindneck and pointed black mark extending into the pale tips of the median coverts (see Pyle ID Guide, page 554) - both indicators for Brewer's Sparrow. The large bill, fairly strong central crown stripe, somewhat distinct malar stripes, and buffy tones to the supercilium and remaining streaked juvenile chest feathers all support the ID as Clay-colored:






Here are two typical Clay-colored Sparrows from the same flock:






Here are two Brewer's Sparrows from west Texas; note the median coverts on the first bird: