Very juvenile (2-day fledgling) cardinal.
My wife had noticed this bird coming of age in the nandina bushes around the house. After we had a scare with the bluebirds, we were happy to find this guy flitting around the parking lot. Not one bit afraid of us... this shot taken from about 3' with a Nikon 24-120VR.
Comparison shot for scale purposes:
That's a pickup truck tire below, just to give you some idea of how little this creature is.