A 'showing well' at 15:00 hours clinched it for me and I was with the small gallery watching (almost immediately) lots of twigs!
And there tucked behind them - the Night Heron!
Stretching out to catch a fish!
The final hour I was there saw the Heron retreat into even denser vegetation and there was literally just one spot (18" off the ground) where it could be seen! My poooooor back :-( Will i never learn?
Just look at that eye, useful for nocturnal activities eh?