Blurred grey heron - wrong autofocus setting

That Grey Heron

Here’s an unusual angle on a grey heron, just after it took off.
I have been trying to catch a decent photo of this guy  for a while, with limited success. Having watched him for a bit on the other side of the lake, he suddenly launched himself, giving me this shot.
Sadly the auto focus was set for the centre spot. Now a fisherman can talk about the one that got away. Sometimes a photographer can show the one that didn’t get in focus, below.

What happens when your autofocus is not set correctly!