Agreed, "Junco" was my first impression. :-) We do have lots of them around here, and they're very active at feeders in winter. It could be a juvenile too, as younger birds often don't seem to have the "potential danger" idea figured out yet, and it's fledging time for many species. Then again, Juncos are fairly bold little birds.

NICE shot, Vaughn! You're tempting me to get another camera. How big is your EOS? And did you use an extra zoom lens for this shot?