I got Really lucky with a small series of shots, I never took pictures of wildlife like this before. I was in Maine vacationing with my family and we were at the lighthouse where they shot Forest Gump. This guy kept flying circles around us around our height (ramp to lighthouse is off ground quite a bit), I noticed it kept dropping this clam trying to break it open. So I pulled out my camera set it to Ai Servo and burst and just went snapping away.
Camera: Canon XTi(400D)
ISO: 100
Shutter: 1/400
Aperture: 5.6
Focal Length:135mm
Exposure Bias: 0
Lens: Canon 28-135mm IS USM