There's been a few.
One of my best was with a woodcock at the start of last season,
We were driving the bird's with a L drive, I was the last man infront.
A woodcock got up behind me and flew down the whole line- infront of 3 guns.
6 shot's later, It flew past my left shoulder about 10 yard's out and turned broadside with me.
I missed with the first and got it with the second.
Most of my best shot's with a shotgun has been at a woodcock
My best with the air rifle was a bunny facing me at 68 yard's
High wind, It hit directly on the forehead backleg's twitched and was stone dead