This guy was sitting on a fence, minding his own business when he was suddenly dive-bombed by one of his mates. I was fortunate to have had my lens on him and was shooting away when it occurred. This was taken in Massachusetts last April and I think it's one of my favorites so far.
Thanks for the comments, Lana and Maxis! I'm currently working on my fill flash technique so, hopefully, I won't find myself with the same types of issues going forward.