Who am I?

Spotted this cute little bird this morning at Sweetwater Wetlands Park, here  in Gainesville. As I search through my field guides, the closest I can come to what this may be is a Nashville Warbler. Migration maps show that their southbound route normally takes them through northern Georgia and Alabama. But since 'normal' is rather fluid as far as climate and weather go these days...this one may have wandered off course. If you can more accurately identify this bird for us, please do! BTW...it showed no wing bars. :) 
Wishing you all a Peaceful Week...