Little Blue Herons will perch on logs or rocks to search for food rather than wade if something solid is available. With the water completely covered in duck weed it’s hard to say how deep it is.
This pond has had a lot of water level changes, up and down, this spring which has freed a number of fallen tree branches that had been hung up on the edges. This Little Blue Heron took full advantage of a log as a hunting spot.
I couldn’t make out what he was plucking out of the water but it seemed to satisfy him.