I'm sympathetic to the homeowners; the more people who come for the bird, the more likely boorish behavior will occur. And even if everyone is on their best behavior, who needs 20 strangers standing around your driveway? I dread the day a true rarity shows up at our house; I'm sure our neighbors, who watch with tolerating amusement when I run outside with my binoculars to look at a Merlin in the dead tree or nighthawks flying around over our street, would not be happy with a procession of cars trying to find a rare bird.
I was thinking about walking back toward the tree when I saw another birder walking up the street toward me. He had just arrived and when I told him where the birds were likely to appear he said, "You mean the tree right where I parked?"
I told him that probably wasn't the best place to park, right across the street from ornery folks and as he went to move his car I looked up in the tree and there the bird was. The sky had turned gray and threatening, so I took a couple of quick pictures before the bird flew off, only to perch in another tree just where I was standing when I saw the bluebird. I took another couple of shots as the rain started and left. My Bird A Day choice made easy.