The little egret must have seen me before I saw him and I just managed to get a shot before he disappeared down the brook. I think he lives over there as I have seen him quite often but he's always miles away across the field.
They always stay one step ahead of me when I go out Egret spotting - that's why I have a monster lens now - so I don't have to get quite close enough to spook them.
@rosiekind I am the proud possessor of a 150 - 600mm SIgma zoom lens and I treated myself to the 1.4x teleconverter so that makes it 840mm (but that makes it a very slow lens!)