The gannets perform a territorial display where they droop their wings, bob up and down, and shake their heads violently from side to side as if saying "no!."
As soon as I saw it I thought "flash blur." You create a flash blur by choosing a slow shutter speed along with the correct ambient exposure while firing the flash (usually in ETTL at zero). The flash creates a single sharp image super-imposed atop the blurred ambient image. As you cannot "see" what you will get, it is best to take many images if possible. You need to set the drive to slower than high speed to give the flash time to recycle.
Canon 400mm f/4 IS DO lens with the 1.4X II TC and the EOS-1D MIII on a Mongoose M3.5. Evaluative metering +1 stop. ETTL flash at zero with Better Beamer.
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