Three Brown Noddy Terns vie with a pelican for a mouthful of small fish. The Noddy, named for its incessant nodding and bowling during courtship, is a surface feeding bird, and finds scavenging morsels of a pelican's meal a convenient course of action. I used a very fast shutter speed -- 1/200th of a second -- to make this image. In order to catch the "decisive moment," I had to make dozens of images of feeding frenzies such as this one. This particular moment places four birds into a perfect spatial relationship. The pelican's rear end is up and head is down. The two diagonal rectangles of negative space captured between the birds lead directly to the pelican's head. Wings, feet, and heads are aligned so that the spaces left between them are crackling with tension and energy.