The Black Crowned Night Heron - Dana Point Harbor, CA 6-12-12. Canon 5D Mark III and Canon 400mm 5.6 L without IS.
This photo is not cropped and almost untouched except to adjust the white balance which was ever so slightly off. Basically the image is straight out of the camera and was a RAW converted to a JPG then resized to 1920x1280. Settings were: 1/1600, F 5.6, ISO 200, Evaluative Metering, AI Servo, AF Mode = Spot AF, Shutter Priority, EC = 0 and hand held by a 53 year old. I spotted this Heron on a fence and gingerly walked up to him and snapped a few pics. There were so many good ones it was hard to decide which one to post.
If anyone has their doubts or gripes about what the 5D can't do or if you still care to boast about the D800 then this image ought to keep those humbled and bring things into perspective

Black-crowned Night-Heron (Nycticorax nycticorax ) by
Revup67, on Flickr