Chris Lipps found this bird at the Big Sable Point Lighthouse early this afternoon. It is a Say's Phoebe although in my photos it doesn't appear pink as the images in my Sibley Guide to Birds.
Per Dave Dister this is the second county record for the species. The first was also at the State Park and also found by Chris Lipps.
Dave and I observed and photographed the bird for just under an hour. It was still there when we left. For those who want to try for the bird, the lighthouse is a 1.8 mile hike from the nearest parking lot.