I called Robin over to witness, and she got looks at it with binoculars. I was going to open the window to get cleaner images, but Buffy and Asia jumped up on the sill and forced me to forego that thought.
Here's a reference post.
A look at e-Bird shows that this bird is 'rare' in Michigan. Mostly found along the west coast of the United States up to Alaska there are occasional sightings in the Great Lakes Regions. Allen Chartier found a Golden-crowned Sparrow on Belle Isle in Detroit two years ago that I was able to photograph. One bird was seen earlier this spring in Ohio.
The Golden-crowned Sparrow flushed when a flock of House Sparrows arrived, and only returned a few minutes later. It didn't stick around though, as the sparrow flock had turned the feeder area into a frenzy. The GCSP flew along the hedge line to the west and did not reappear. I sat in front of the window after sundown, but only the White-crowned Sparrow would return.
Now, if only a Harris' Sparrow would appear I would have a Zonotrichia Slam!