Great Blue Heron Tracks
I showed up to the Elm Street Dam at 6:30 in the morning intent on fishing out any eels or fish trapped in some impounded water underneath the bridge. Unfortunately, as I showed up a great blue heron flew away. It's tracks were all over in the impoundment, and no living fish were to be found.
It seems the heron had the same idea, and was just a little quicker.
From Wildlife at Elm Street Dam Site