Awh I didn't see this thread until now!
I have two ducks, I named one while she was in the egg still, Dougie. I kinda hoped for boys and I liked that name. I decided if she were female she'd be called Winter, so Winter Dougie. But the name "Dougie" stuck and I never call her Winter, or her "full name".
Sprightly didn't get named until she was, probably a week old? Wanted the perfect name, that summed her up. Eventually she jumped out of the brooder, she had so much energy, so I called her Sprightly. Thought she was a boy until way later but there we go, wrong with both of them
Call me crazy, but once day I want a runner called Disco, a muscovy named Quest, and a little call drake called Cowboy

I usually go for elegant meaningful names, but ducks are just too silly for that.

Maybe someday, sigh.