I was looking for a warbler in a tree and, as I rounded the tree, this Bittern suddenly exploded into flight. Not sure which of us was more startled. The closest by far that I've ever come to a Bittern that I was actually able to see. Ones hiding unseen in reed-beds don't count however loudly they call. 😉
Of course the picture itself is rubbish with lots of motion blur but as a reminder of a great experience I will still treasure it.