I believe this is a White Capped Sparrow. If not I will have a correction posted in the comments fairly quickly.
I had been playing tag with a juvenile Bald Eagle and lost the game. No Eagle photos today. But as a consolation prize this sparrow was chased out of the brush when the Eagle made his last pass.
I’ll take the opportunity to photograph the little fast guys any day.
NOTE: The expert has sent me the correction! Avain101 tells me it is a White-throated Sparrow. I stand corrected.