It's not really a mystery post, but it's a little hard to spot. If he hadn't moved, I probably would have missed seeing him altogether. He took a step and gave away his location.
Who is he? He's an American Woodcock, also known in my area as a timberdoodle.
Everybody piled into the jeep (old 1966 vintage model with the windshield down and no doors) and took a ride on the family property for my brother's birthday and got lucky enough to see another woodcock. I was able to get better pictures of this one.
Having green grass as a backdrop, instead of more dry leaves really helps with the contrast and visibility.
Watching these guys bob along as they walk is such a treat (that's how I know he is a male). Also, if you ever have the chance to go out on a spring night and watch their spiral mating flights, it's an experience not to be missed! You can sneak up closer and closer when they're high in the sky and then watch them do their courtship dance in the dusk after they land. As I said, if you have the chance, do it! :)