Flight of the Swallowtail

I have been trying to get this shot for so long!! I can get birds in flight, and even the odd bee but never a butterfly. Today I finally got one! Its not as close as I wanted so I had to crop it a fair bit but for now it works. I can't believe how hard these guys are to focus on in flight. They dart here and there and change course so rapidly you don't have long to adjust your focus and so on. It was fun to do though ...I had to find them in the viewfinder, and then zoom in as much as I could while focusing at the same time... :)

Done