At Mapleknoll Marsh, the trick to spotting frogs is to eavesdrop a bit at the entry, then make your way in slow motion onto the boardwalk just to where you can survey the water surface. Yesterday morning I spotted nine frogs, though quite a few splashes and shrieks informed me that my presence was detected by many others. I have found that while most frogs dive underwater before I’m even close, others seem impervious to my presence, even if I go out of my way to get their attention. Two tiny videos below: in the first one, a chorus of green frogs (high twang) and bullfrogs (deep rrrrr) from the marsh entrance; in the second, the camera movement is me trying to get some action.
(High volume setting recommended.)