Michael found at least three (amazing!) on Sept 26, 1999, on the Pine Mountain Trail in Meriwether County.
Here is a Wilson's Warbler I found at the Horse Park in Conyers (Rockdale County, piedmont region of GA) on 5/06/06.
I have been finding this species more reliably each fall though I am not getting good photos of them. Below is
one I found on Chattahoochee River Cobb County on 09/16/2014. - Eric Beohm