They make a run pattern and in the first part of the run, they extend the lower bill into the water just enough to emit a "phosphorescent" glow which brings the smaller fish to the surface. On the second run, they further immerse the lower beak and when they make contact, the upper beak closes down for the kill. I didn't get any catches but this is a shot with a full capture mode extension.
This is my first experience shooting one of these guys and I find it to be a unique experience..now if the bloody sun would come out.
