Here are a couple more photos I took of that graceful moment. And yes, on 2 occasions immediately after eating, Patriot drank for about 5 minutes. One time I counted 70 swallows in a row. It would drink, move around, go back to drinking, move, drink, etc.

The motion is too slight to film -- at least for my digital camera -- but there is the slightest bobbing/motion of the head.
1) Slit of mouth widens by the tiniest bit
2) Tip of fork flicks down into the water
3) Tongue retracts and mouth closes
4) Swallowing action
All with that almost imperceptible bob of the head, and all done within a fraction of a second.