Mating Mallards

Yesterday, as I was trying to get some pics of the pair of Black-headed Grosebeaks at the suet eating together, but all I succeeded in was scaring them away. But, all was not lost... I noticed a pair of Mallard ducks mating right by our dock. Do you think I could get a picture of that before they parted ways? Nope! No such luck. Here is the lucky duck afterward though...