Lincoln's Sparrow (Melospiza lincolnii) 4 December 2006 - Coyote Point, San Mateo, California.
Photos © 2006 Joseph Morlan.
This is a fairly common, but shy migrant and winter visitor to our area. It breeds in wet mountain meadows and winters in moist weedy fields. Olympus D-550z / Nikon FieldScope 3 / 30XWA (hand-held - no adapter).