I noticed a couple of Sandpipers today who, after extracting a larger-than-normal morsel from the sand under the receding waves, "strutted their stuff" and dropped the morsel they had discovered for all surrounding Sandpipers to see, and then immediately snatched it up again.
The dropping of the catch did not seem an act of clumsiness, but a very deliberate "Look what I got!"
My impression was that they were proud of themselves and showing their flockmates what good hunter-gatherers they are.
Am I right? Is this a way for a male to show off what a good provider he would be? Or is it just the equivalent of a baboon beating his breast or a football player spiking the ball after scoring a touchdown, or is there some other reason for this behavior?