A few days ago I had one of those thoughts...
...'I wonder if there are any frogs in the pond'.
Knowing it was very muddy around the pond after many weeks of constant rain I pulled on the wellies, grabbed my compact camera and sound recorder and headed off down to the pond with the low expectation of either no frogs or at the most just a handful.
How wrong was I! Opening the latch gate and walking along the chicken wire covered wooden plank walkway to the dipping platform I was greeted by a flurry of 'blink and miss it' activity which saw the water broil for a moment leaving only ripples to slowly dissipate.
Then slowly and gradually with increasing frequency bubbles started to rise to the surface. The bubbles were shortly followed by numerous pairs of eyes rising above the surface leading to little heads and then bodies and movement.
The pond was not home to a couple or even a few common frogs, it was the meeting ground of more than sixty. I gave up counting at sixty and there were still more and this was only one corner section of the pond.
I crouched (the ground far too water logged to sit) behind some of the pond-side vegetation for a while just watching this seething mass of frogs, something way beyond my expectation of what would be there.
I couldn't resist the temptation to snap a couple of photographs and to make an audio recording of the experience. In fact two audio recordings the second trying to record more of the frogs vocalisations and luckily two frogs obliged by popping up just a few inches from the microphone.