So I was at the beach yesterday (Bodega Bay, California), trying out my new Wimberley, with my also new(used) 300 2.8, when this guy screamed overhead. Luckily, he came back against the wind, and I was able to get my camera out of the tripod in just enough time to aim the beast straight up and grab this shot. I'm pretty sure it's a falcon, but is it a Peregrine? Or something else. Many thanks!