I've missed three.

All of them inside 15 yards.

Miss no. 1... bird was moving.. he'd made me... at 12 steps... I knew it was all or nothing... I got the second one.

Miss no. 2... I cleanly killed a yellow pine tree about 4" in diameter.. almost exact same scenario... moving bird... in close.

Miss no. 3... I tried to move on a bird and did not have my face down on the gun and shot right over his head.