The photograph above was created at the Tampa Bay Rookery, during my last Spoonbill photography tour. Some in-between positions in bird in flight photography can be very attractive given the situation. In this case, the beautiful symmetry really gives a strong touch. Plus, some detail from the upper-wings as well as the under-wings are visible. The spots of red from the upper-wings only visible during breeding season are very easily admired.
The photograph above is a Brown Pelican in flight! One could wonder if it is not some kind UFO 🙂 A good technique to create pleasing blurs is to shoot in Tv mode to have total control over the shutter speed. A shutter speed between 1/10 to 1/30 typically gives the best results for me. If you camera body allows it, leave your ISO in auto with a cap at 3200 or a bit less if you have a 7D.