I tried shooting Black Skimmers last year and failed miserably. This year I decided they were just too far off and that I needed to get in the water with them. So, I wait for low tide and go in waist deep, the birds are still too far off but I do my best capturing them. About an hour passes and much to my surprise the Skimmers start flying right past me to my left and right. Now they're too close, I can't frame the whole bird and they're inside my minimum focus distance. Needless to say most of those shots didn't turn out very good, this one turned out okay.
IMAGE LINK: http://www.flickr.com/photos/sliceotime/9146008585/Black Skimmer


