Little yellow bird, seems to look most like a orange crowned warbler:
Resident-lawnmower-man thought my concerns were ridiculous, and added sarcastically "Yeah, and maybe it has epilepsy too." "Or blind AND epileptic." Not that he didn't care for the bird. He was the one who suggested that I need to give it a water bowl in addition to the bird seed. His family has rehabilitated several birds on their farm and RLM himself was a childhood chicken-raising entrepreneur who used the profits to buy a cow! I recall my urban child self being more interested in clothes at the mall...