I have them in boxes tonight. They have settled well, and I hope to get a good nights sleep. One box is inside the house - So I will definately wake up if they do make a noise tonight.
I did have a better look around outside tonight and have found some disturbed pot plants. A cat couldnt have moved or knocked them over, So I am sure now that yesterdays 1 am quacking and unsettled behaviour was because of a human in my backyard. So I should actually be glad that I have so many noisey ducks. I just wish they could protect my yard with out waking the neighbours.
I have one little scovie, she is only a few weeks old and such a little sweetie... She is so quiet even now compared to the two pekin ducklings she lives with.