naw wasnt throwin water off its back ....was doin doughnuts ... lol .... it looked to be intentional too ....at first i thought maybe tryin to round up shad, minnows, etc .... but did it way too much .... and saw the hens divin for zebra mussles ..... so im thinkin a courtship thing .... alot of birds court well before spring .... thats where the "redleg" thing falls in with the mallards .... not a northern bird thing ... but a bird comin into full (courtship) plumage