Great flight shot. Perfect exposure on the underwings and belly, with great detail. Caught him at just the right moment, coming toward you with upraised wings and good eye contact -- hard to do with flying terns. I personally like the position of the bird in the frame with the tight crop on the left. Something a bit odd about the left wing tip shape (image right), and a little bit of halo at the head. But those are minor nits, on a great shot. Well done!