I'd love to go to a place and try to spend some time trying to capture birds in flight. It is not easy when you have an entry level camera with slow autofocus and only 3fps. Knowing your gear is a must for sure. I have learnt to keep my ISO below 1600 but in a sunny day I set it to a maximu of 400. My shutter speed for birds in flight was at 1/2000 which is enough. Here is a lucky shot!