Brian Watson muttered:


"Magwitch" wrote in message
...

It could be caused by hibernating beasties waking up, and stirring the mud
up, or possibly because we've had a couple of visits from a heron and
perhaps the fish are fighting a rearguard action... very clever of them

Depending on the area affected, it may be bird poo.

A big bird dropping a "wet one" (I know; they are *all* wet ones, but it is
a matter of degree) into a small pond can cause a widespread splash effect
that dissipates quite quickly.

However, our pond's big ‹ a pterodactyl?