This series was taken in continuous fire as it happened in literally, the blink of an eye. I watched for the baby to open it's mouth wide, and would hold down the shutter to get the capture. I didn't even know what I caught until I checked the lcd screen! I planned on taking more, to tweak the focus, but a swarm of swallows flew in and dive bombed me like kamikaze pilots!! That was a sure sign it was time to move on!