Observações de willknit

I get why people are saying sing sparrow, but this bird had a warbling song not a loud whistling one (I’m sure there are better words for this. I am not a birder). It also has the two tone beak (not a shadow) and distinct eye ring of the Lincoln’s sparrow.

I’m not even the most remotely a bird expert though! I’d love to hear your opinions. Apologies that the photo isn’t more crisp. It was taken through a lot of marshy brush from really far back